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Finding the Fourth Proportional to 156,952.93, 216,669.44 and 100,397.11

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Solution

The fourth proportional to 156,952.93, 216,669.44 and 100,397.11 is: 138,595.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,952.93 : 216,669.44 = 100,397.11 : x
  2. Step 2: Convert to fraction form
    156,952.93/216,669.44 = 100,397.11/x
  3. Step 3: Cross multiply
    156,952.93x = 216,669.44 × 100,397.11
  4. Step 4: Simplify right side
    156,952.93x = 21,752,985,601.32
  5. Step 5: Solve for x
    x = 21,752,985,601.32/156,952.93
  6. Step 6: Final answer
    x = 138,595.60

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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.