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Finding the Fourth Proportional to 158,397.54, 218,588.79 and 85,800.59

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Solution

The fourth proportional to 158,397.54, 218,588.79 and 85,800.59 is: 118,404.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,397.54 : 218,588.79 = 85,800.59 : x
  2. Step 2: Convert to fraction form
    158,397.54/218,588.79 = 85,800.59/x
  3. Step 3: Cross multiply
    158,397.54x = 218,588.79 × 85,800.59
  4. Step 4: Simplify right side
    158,397.54x = 18,755,046,056.44
  5. Step 5: Solve for x
    x = 18,755,046,056.44/158,397.54
  6. Step 6: Final answer
    x = 118,404.91

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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.