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Finding the Fourth Proportional to 156,642.66, 234,886.84 and 56,787.89

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Solution

The fourth proportional to 156,642.66, 234,886.84 and 56,787.89 is: 85,153.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,642.66 : 234,886.84 = 56,787.89 : x
  2. Step 2: Convert to fraction form
    156,642.66/234,886.84 = 56,787.89/x
  3. Step 3: Cross multiply
    156,642.66x = 234,886.84 × 56,787.89
  4. Step 4: Simplify right side
    156,642.66x = 13,338,726,715.96
  5. Step 5: Solve for x
    x = 13,338,726,715.96/156,642.66
  6. Step 6: Final answer
    x = 85,153.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.