Home / 129,693.35-178,780.87-101,349.83

Finding the Fourth Proportional to 129,693.35, 178,780.87 and 101,349.83

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Solution

The fourth proportional to 129,693.35, 178,780.87 and 101,349.83 is: 139,709.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,693.35 : 178,780.87 = 101,349.83 : x
  2. Step 2: Convert to fraction form
    129,693.35/178,780.87 = 101,349.83/x
  3. Step 3: Cross multiply
    129,693.35x = 178,780.87 × 101,349.83
  4. Step 4: Simplify right side
    129,693.35x = 18,119,411,355.39
  5. Step 5: Solve for x
    x = 18,119,411,355.39/129,693.35
  6. Step 6: Final answer
    x = 139,709.64

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1.5x scale

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.