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Finding the Fourth Proportional to 156,010.68, 215,294.49 and 84,390.48

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Solution

The fourth proportional to 156,010.68, 215,294.49 and 84,390.48 is: 116,458.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,010.68 : 215,294.49 = 84,390.48 : x
  2. Step 2: Convert to fraction form
    156,010.68/215,294.49 = 84,390.48/x
  3. Step 3: Cross multiply
    156,010.68x = 215,294.49 × 84,390.48
  4. Step 4: Simplify right side
    156,010.68x = 18,168,805,352.46
  5. Step 5: Solve for x
    x = 18,168,805,352.46/156,010.68
  6. Step 6: Final answer
    x = 116,458.73

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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.