Home / 191,736,724.20-287,605,086.30-76,739,015.40

Finding the Fourth Proportional to 191,736,724.20, 287,605,086.30 and 76,739,015.40

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Solution

The fourth proportional to 191,736,724.20, 287,605,086.30 and 76,739,015.40 is: 115,108,523.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,736,724.20 : 287,605,086.30 = 76,739,015.40 : x
  2. Step 2: Convert to fraction form
    191,736,724.20/287,605,086.30 = 76,739,015.40/x
  3. Step 3: Cross multiply
    191,736,724.20x = 287,605,086.30 × 76,739,015.40
  4. Step 4: Simplify right side
    191,736,724.20x = 22,070,531,146,694,032
  5. Step 5: Solve for x
    x = 22,070,531,146,694,032/191,736,724.20
  6. Step 6: Final answer
    x = 115,108,523.10

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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.