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Finding the Fourth Proportional to 102,644.60, 153,966.90 and 88,647.80

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Solution

The fourth proportional to 102,644.60, 153,966.90 and 88,647.80 is: 132,971.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,644.60 : 153,966.90 = 88,647.80 : x
  2. Step 2: Convert to fraction form
    102,644.60/153,966.90 = 88,647.80/x
  3. Step 3: Cross multiply
    102,644.60x = 153,966.90 × 88,647.80
  4. Step 4: Simplify right side
    102,644.60x = 13,648,826,957.82
  5. Step 5: Solve for x
    x = 13,648,826,957.82/102,644.60
  6. Step 6: Final answer
    x = 132,971.70

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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.