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Finding the Fourth Proportional to 108,458.60, 149,671.40 and 60,711.93

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Solution

The fourth proportional to 108,458.60, 149,671.40 and 60,711.93 is: 83,781.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,458.60 : 149,671.40 = 60,711.93 : x
  2. Step 2: Convert to fraction form
    108,458.60/149,671.40 = 60,711.93/x
  3. Step 3: Cross multiply
    108,458.60x = 149,671.40 × 60,711.93
  4. Step 4: Simplify right side
    108,458.60x = 9,086,839,256.24
  5. Step 5: Solve for x
    x = 9,086,839,256.24/108,458.60
  6. Step 6: Final answer
    x = 83,781.64

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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.