Home / 131,530.50-181,512.16-74,941.88

Finding the Fourth Proportional to 131,530.50, 181,512.16 and 74,941.88

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Solution

The fourth proportional to 131,530.50, 181,512.16 and 74,941.88 is: 103,419.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,530.50 : 181,512.16 = 74,941.88 : x
  2. Step 2: Convert to fraction form
    131,530.50/181,512.16 = 74,941.88/x
  3. Step 3: Cross multiply
    131,530.50x = 181,512.16 × 74,941.88
  4. Step 4: Simplify right side
    131,530.50x = 13,602,861,418.35
  5. Step 5: Solve for x
    x = 13,602,861,418.35/131,530.50
  6. Step 6: Final answer
    x = 103,419.83

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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.