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Finding the Fourth Proportional to 156,692.41, 216,240.70 and 88,708

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Solution

The fourth proportional to 156,692.41, 216,240.70 and 88,708 is: 122,419.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,692.41 : 216,240.70 = 88,708 : x
  2. Step 2: Convert to fraction form
    156,692.41/216,240.70 = 88,708/x
  3. Step 3: Cross multiply
    156,692.41x = 216,240.70 × 88,708
  4. Step 4: Simplify right side
    156,692.41x = 19,182,280,015.60
  5. Step 5: Solve for x
    x = 19,182,280,015.60/156,692.41
  6. Step 6: Final answer
    x = 122,419.97

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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.