Home / 129,428.98-178,577.11-75,727.19

Finding the Fourth Proportional to 129,428.98, 178,577.11 and 75,727.19

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Solution

The fourth proportional to 129,428.98, 178,577.11 and 75,727.19 is: 104,483.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,428.98 : 178,577.11 = 75,727.19 : x
  2. Step 2: Convert to fraction form
    129,428.98/178,577.11 = 75,727.19/x
  3. Step 3: Cross multiply
    129,428.98x = 178,577.11 × 75,727.19
  4. Step 4: Simplify right side
    129,428.98x = 13,523,142,738.62
  5. Step 5: Solve for x
    x = 13,523,142,738.62/129,428.98
  6. Step 6: Final answer
    x = 104,483.11

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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.