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Finding the Fourth Proportional to 104,429.30, 156,643.95 and 68,999.90

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Solution

The fourth proportional to 104,429.30, 156,643.95 and 68,999.90 is: 103,499.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,429.30 : 156,643.95 = 68,999.90 : x
  2. Step 2: Convert to fraction form
    104,429.30/156,643.95 = 68,999.90/x
  3. Step 3: Cross multiply
    104,429.30x = 156,643.95 × 68,999.90
  4. Step 4: Simplify right side
    104,429.30x = 10,808,416,885.61
  5. Step 5: Solve for x
    x = 10,808,416,885.61/104,429.30
  6. Step 6: Final answer
    x = 103,499.85

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Similar ratio
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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.