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Finding the Fourth Proportional to 144,887.40, 217,331.10 and 105,229.80

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Solution

The fourth proportional to 144,887.40, 217,331.10 and 105,229.80 is: 157,844.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,887.40 : 217,331.10 = 105,229.80 : x
  2. Step 2: Convert to fraction form
    144,887.40/217,331.10 = 105,229.80/x
  3. Step 3: Cross multiply
    144,887.40x = 217,331.10 × 105,229.80
  4. Step 4: Simplify right side
    144,887.40x = 22,869,708,186.78
  5. Step 5: Solve for x
    x = 22,869,708,186.78/144,887.40
  6. Step 6: Final answer
    x = 157,844.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.