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Finding the Fourth Proportional to 112,648.60, 168,800.10 and 97,787.80

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Solution

The fourth proportional to 112,648.60, 168,800.10 and 97,787.80 is: 146,531.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,648.60 : 168,800.10 = 97,787.80 : x
  2. Step 2: Convert to fraction form
    112,648.60/168,800.10 = 97,787.80/x
  3. Step 3: Cross multiply
    112,648.60x = 168,800.10 × 97,787.80
  4. Step 4: Simplify right side
    112,648.60x = 16,506,590,418.78
  5. Step 5: Solve for x
    x = 16,506,590,418.78/112,648.60
  6. Step 6: Final answer
    x = 146,531.70

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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.