Home / 129,248.89-178,361.71-71,887.66

Finding the Fourth Proportional to 129,248.89, 178,361.71 and 71,887.66

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Solution

The fourth proportional to 129,248.89, 178,361.71 and 71,887.66 is: 99,203.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,248.89 : 178,361.71 = 71,887.66 : x
  2. Step 2: Convert to fraction form
    129,248.89/178,361.71 = 71,887.66/x
  3. Step 3: Cross multiply
    129,248.89x = 178,361.71 × 71,887.66
  4. Step 4: Simplify right side
    129,248.89x = 12,822,005,965.50
  5. Step 5: Solve for x
    x = 12,822,005,965.50/129,248.89
  6. Step 6: Final answer
    x = 99,203.99

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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.