Home / 129,312.52-178,424.53-75,587.14

Finding the Fourth Proportional to 129,312.52, 178,424.53 and 75,587.14

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Solution

The fourth proportional to 129,312.52, 178,424.53 and 75,587.14 is: 104,294.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,312.52 : 178,424.53 = 75,587.14 : x
  2. Step 2: Convert to fraction form
    129,312.52/178,424.53 = 75,587.14/x
  3. Step 3: Cross multiply
    129,312.52x = 178,424.53 × 75,587.14
  4. Step 4: Simplify right side
    129,312.52x = 13,486,599,482.48
  5. Step 5: Solve for x
    x = 13,486,599,482.48/129,312.52
  6. Step 6: Final answer
    x = 104,294.62

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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.