Home / 129,363.62-178,516.01-72,005.94

Finding the Fourth Proportional to 129,363.62, 178,516.01 and 72,005.94

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Solution

The fourth proportional to 129,363.62, 178,516.01 and 72,005.94 is: 99,364.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,363.62 : 178,516.01 = 72,005.94 : x
  2. Step 2: Convert to fraction form
    129,363.62/178,516.01 = 72,005.94/x
  3. Step 3: Cross multiply
    129,363.62x = 178,516.01 × 72,005.94
  4. Step 4: Simplify right side
    129,363.62x = 12,854,213,105.10
  5. Step 5: Solve for x
    x = 12,854,213,105.10/129,363.62
  6. Step 6: Final answer
    x = 99,364.98

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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.