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Finding the Fourth Proportional to 156,503.68, 216,058.76 and 122,439.76

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Solution

The fourth proportional to 156,503.68, 216,058.76 and 122,439.76 is: 169,032.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,503.68 : 216,058.76 = 122,439.76 : x
  2. Step 2: Convert to fraction form
    156,503.68/216,058.76 = 122,439.76/x
  3. Step 3: Cross multiply
    156,503.68x = 216,058.76 × 122,439.76
  4. Step 4: Simplify right side
    156,503.68x = 26,454,182,720.30
  5. Step 5: Solve for x
    x = 26,454,182,720.30/156,503.68
  6. Step 6: Final answer
    x = 169,032.34

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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.