Home / 129,673.11-178,949.91-72,316.14

Finding the Fourth Proportional to 129,673.11, 178,949.91 and 72,316.14

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Solution

The fourth proportional to 129,673.11, 178,949.91 and 72,316.14 is: 99,796.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,673.11 : 178,949.91 = 72,316.14 : x
  2. Step 2: Convert to fraction form
    129,673.11/178,949.91 = 72,316.14/x
  3. Step 3: Cross multiply
    129,673.11x = 178,949.91 × 72,316.14
  4. Step 4: Simplify right side
    129,673.11x = 12,940,966,744.55
  5. Step 5: Solve for x
    x = 12,940,966,744.55/129,673.11
  6. Step 6: Final answer
    x = 99,796.84

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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.