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Finding the Fourth Proportional to 104,378.80, 156,501.60 and 68,799.04

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Solution

The fourth proportional to 104,378.80, 156,501.60 and 68,799.04 is: 103,154.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,378.80 : 156,501.60 = 68,799.04 : x
  2. Step 2: Convert to fraction form
    104,378.80/156,501.60 = 68,799.04/x
  3. Step 3: Cross multiply
    104,378.80x = 156,501.60 × 68,799.04
  4. Step 4: Simplify right side
    104,378.80x = 10,767,159,838.46
  5. Step 5: Solve for x
    x = 10,767,159,838.46/104,378.80
  6. Step 6: Final answer
    x = 103,154.66

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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.