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Finding the Fourth Proportional to 136,752.90, 205,200.42 and 103,463.11

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Solution

The fourth proportional to 136,752.90, 205,200.42 and 103,463.11 is: 155,248.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,752.90 : 205,200.42 = 103,463.11 : x
  2. Step 2: Convert to fraction form
    136,752.90/205,200.42 = 103,463.11/x
  3. Step 3: Cross multiply
    136,752.90x = 205,200.42 × 103,463.11
  4. Step 4: Simplify right side
    136,752.90x = 21,230,673,626.51
  5. Step 5: Solve for x
    x = 21,230,673,626.51/136,752.90
  6. Step 6: Final answer
    x = 155,248.43

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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.