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Finding the Fourth Proportional to 104,657.40, 156,986.10 and 42,327.90

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Solution

The fourth proportional to 104,657.40, 156,986.10 and 42,327.90 is: 63,491.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,657.40 : 156,986.10 = 42,327.90 : x
  2. Step 2: Convert to fraction form
    104,657.40/156,986.10 = 42,327.90/x
  3. Step 3: Cross multiply
    104,657.40x = 156,986.10 × 42,327.90
  4. Step 4: Simplify right side
    104,657.40x = 6,644,891,942.19
  5. Step 5: Solve for x
    x = 6,644,891,942.19/104,657.40
  6. Step 6: Final answer
    x = 63,491.85

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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.