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Finding the Fourth Proportional to 104,150.40, 156,006.90 and 86,654.40

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Solution

The fourth proportional to 104,150.40, 156,006.90 and 86,654.40 is: 129,799.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,150.40 : 156,006.90 = 86,654.40 : x
  2. Step 2: Convert to fraction form
    104,150.40/156,006.90 = 86,654.40/x
  3. Step 3: Cross multiply
    104,150.40x = 156,006.90 × 86,654.40
  4. Step 4: Simplify right side
    104,150.40x = 13,518,684,315.36
  5. Step 5: Solve for x
    x = 13,518,684,315.36/104,150.40
  6. Step 6: Final answer
    x = 129,799.64

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1.5x scale

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.