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Finding the Fourth Proportional to 149,704.64, 206,627.13 and 98,726.57

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Solution

The fourth proportional to 149,704.64, 206,627.13 and 98,726.57 is: 136,265.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,704.64 : 206,627.13 = 98,726.57 : x
  2. Step 2: Convert to fraction form
    149,704.64/206,627.13 = 98,726.57/x
  3. Step 3: Cross multiply
    149,704.64x = 206,627.13 × 98,726.57
  4. Step 4: Simplify right side
    149,704.64x = 20,399,586,780.71
  5. Step 5: Solve for x
    x = 20,399,586,780.71/149,704.64
  6. Step 6: Final answer
    x = 136,265.57

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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.