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Finding the Fourth Proportional to 156,006.48, 215,270.42 and 88,019.48

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Solution

The fourth proportional to 156,006.48, 215,270.42 and 88,019.48 is: 121,456.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,006.48 : 215,270.42 = 88,019.48 : x
  2. Step 2: Convert to fraction form
    156,006.48/215,270.42 = 88,019.48/x
  3. Step 3: Cross multiply
    156,006.48x = 215,270.42 × 88,019.48
  4. Step 4: Simplify right side
    156,006.48x = 18,947,990,427.78
  5. Step 5: Solve for x
    x = 18,947,990,427.78/156,006.48
  6. Step 6: Final answer
    x = 121,456.43

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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.