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Finding the Fourth Proportional to 111,424.68, 153,766.26 and 61,124.04

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Solution

The fourth proportional to 111,424.68, 153,766.26 and 61,124.04 is: 84,351.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,424.68 : 153,766.26 = 61,124.04 : x
  2. Step 2: Convert to fraction form
    111,424.68/153,766.26 = 61,124.04/x
  3. Step 3: Cross multiply
    111,424.68x = 153,766.26 × 61,124.04
  4. Step 4: Simplify right side
    111,424.68x = 9,398,815,026.89
  5. Step 5: Solve for x
    x = 9,398,815,026.89/111,424.68
  6. Step 6: Final answer
    x = 84,351.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.