Home / 191,971.20-287,956.80-92,114.40

Finding the Fourth Proportional to 191,971.20, 287,956.80 and 92,114.40

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Solution

The fourth proportional to 191,971.20, 287,956.80 and 92,114.40 is: 138,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,971.20 : 287,956.80 = 92,114.40 : x
  2. Step 2: Convert to fraction form
    191,971.20/287,956.80 = 92,114.40/x
  3. Step 3: Cross multiply
    191,971.20x = 287,956.80 × 92,114.40
  4. Step 4: Simplify right side
    191,971.20x = 26,524,967,857.92
  5. Step 5: Solve for x
    x = 26,524,967,857.92/191,971.20
  6. Step 6: Final answer
    x = 138,171.60

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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.