Home / 130,487.27-180,061.44-72,345.56

Finding the Fourth Proportional to 130,487.27, 180,061.44 and 72,345.56

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Solution

The fourth proportional to 130,487.27, 180,061.44 and 72,345.56 is: 99,830.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,487.27 : 180,061.44 = 72,345.56 : x
  2. Step 2: Convert to fraction form
    130,487.27/180,061.44 = 72,345.56/x
  3. Step 3: Cross multiply
    130,487.27x = 180,061.44 × 72,345.56
  4. Step 4: Simplify right side
    130,487.27x = 13,026,645,711.21
  5. Step 5: Solve for x
    x = 13,026,645,711.21/130,487.27
  6. Step 6: Final answer
    x = 99,830.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.