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Finding the Fourth Proportional to 104,381.80, 156,506.10 and 68,802.04

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Solution

The fourth proportional to 104,381.80, 156,506.10 and 68,802.04 is: 103,159.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,381.80 : 156,506.10 = 68,802.04 : x
  2. Step 2: Convert to fraction form
    104,381.80/156,506.10 = 68,802.04/x
  3. Step 3: Cross multiply
    104,381.80x = 156,506.10 × 68,802.04
  4. Step 4: Simplify right side
    104,381.80x = 10,767,938,952.44
  5. Step 5: Solve for x
    x = 10,767,938,952.44/104,381.80
  6. Step 6: Final answer
    x = 103,159.16

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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.