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Finding the Fourth Proportional to 156,956, 216,551.40 and 88,962.08

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Solution

The fourth proportional to 156,956, 216,551.40 and 88,962.08 is: 122,740.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,956 : 216,551.40 = 88,962.08 : x
  2. Step 2: Convert to fraction form
    156,956/216,551.40 = 88,962.08/x
  3. Step 3: Cross multiply
    156,956x = 216,551.40 × 88,962.08
  4. Step 4: Simplify right side
    156,956x = 19,264,862,970.91
  5. Step 5: Solve for x
    x = 19,264,862,970.91/156,956
  6. Step 6: Final answer
    x = 122,740.53

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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.