Home / 129,395.18-178,524.14-72,795.62

Finding the Fourth Proportional to 129,395.18, 178,524.14 and 72,795.62

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Solution

The fourth proportional to 129,395.18, 178,524.14 and 72,795.62 is: 100,434.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,395.18 : 178,524.14 = 72,795.62 : x
  2. Step 2: Convert to fraction form
    129,395.18/178,524.14 = 72,795.62/x
  3. Step 3: Cross multiply
    129,395.18x = 178,524.14 × 72,795.62
  4. Step 4: Simplify right side
    129,395.18x = 12,995,775,538.60
  5. Step 5: Solve for x
    x = 12,995,775,538.60/129,395.18
  6. Step 6: Final answer
    x = 100,434.77

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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.