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Finding the Fourth Proportional to 156,506.68, 216,062.90 and 122,442.76

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Solution

The fourth proportional to 156,506.68, 216,062.90 and 122,442.76 is: 169,036.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,506.68 : 216,062.90 = 122,442.76 : x
  2. Step 2: Convert to fraction form
    156,506.68/216,062.90 = 122,442.76/x
  3. Step 3: Cross multiply
    156,506.68x = 216,062.90 × 122,442.76
  4. Step 4: Simplify right side
    156,506.68x = 26,455,337,809.60
  5. Step 5: Solve for x
    x = 26,455,337,809.60/156,506.68
  6. Step 6: Final answer
    x = 169,036.48

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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.