Home / 131,875.17-181,987.20-71,445.71

Finding the Fourth Proportional to 131,875.17, 181,987.20 and 71,445.71

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Solution

The fourth proportional to 131,875.17, 181,987.20 and 71,445.71 is: 98,594.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,875.17 : 181,987.20 = 71,445.71 : x
  2. Step 2: Convert to fraction form
    131,875.17/181,987.20 = 71,445.71/x
  3. Step 3: Cross multiply
    131,875.17x = 181,987.20 × 71,445.71
  4. Step 4: Simplify right side
    131,875.17x = 13,002,203,804.98
  5. Step 5: Solve for x
    x = 13,002,203,804.98/131,875.17
  6. Step 6: Final answer
    x = 98,594.78

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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.