Home / 131,520.60-181,494.78-74,159.40

Finding the Fourth Proportional to 131,520.60, 181,494.78 and 74,159.40

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Solution

The fourth proportional to 131,520.60, 181,494.78 and 74,159.40 is: 102,337.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,520.60 : 181,494.78 = 74,159.40 : x
  2. Step 2: Convert to fraction form
    131,520.60/181,494.78 = 74,159.40/x
  3. Step 3: Cross multiply
    131,520.60x = 181,494.78 × 74,159.40
  4. Step 4: Simplify right side
    131,520.60x = 13,459,543,987.93
  5. Step 5: Solve for x
    x = 13,459,543,987.93/131,520.60
  6. Step 6: Final answer
    x = 102,337.92

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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.