Home / 191,720,632,017.60-287,580,948,026.40-80,005,781,678.40

Finding the Fourth Proportional to 191,720,632,017.60, 287,580,948,026.40 and 80,005,781,678.40

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Solution

The fourth proportional to 191,720,632,017.60, 287,580,948,026.40 and 80,005,781,678.40 is: 120,008,672,517.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,720,632,017.60 : 287,580,948,026.40 = 80,005,781,678.40 : x
  2. Step 2: Convert to fraction form
    191,720,632,017.60/287,580,948,026.40 = 80,005,781,678.40/x
  3. Step 3: Cross multiply
    191,720,632,017.60x = 287,580,948,026.40 × 80,005,781,678.40
  4. Step 4: Simplify right side
    191,720,632,017.60x = 23,008,138,542,667,456,839,680
  5. Step 5: Solve for x
    x = 23,008,138,542,667,456,839,680/191,720,632,017.60
  6. Step 6: Final answer
    x = 120,008,672,517.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.