Home / 102,220.14-141,019.47-72,000.66

Finding the Fourth Proportional to 102,220.14, 141,019.47 and 72,000.66

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Solution

The fourth proportional to 102,220.14, 141,019.47 and 72,000.66 is: 99,329.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,220.14 : 141,019.47 = 72,000.66 : x
  2. Step 2: Convert to fraction form
    102,220.14/141,019.47 = 72,000.66/x
  3. Step 3: Cross multiply
    102,220.14x = 141,019.47 × 72,000.66
  4. Step 4: Simplify right side
    102,220.14x = 10,153,494,912.85
  5. Step 5: Solve for x
    x = 10,153,494,912.85/102,220.14
  6. Step 6: Final answer
    x = 99,329.69

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Half scale
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Double scale
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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.