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Finding the Fourth Proportional to 108,142.68, 149,235.84 and 60,394.80

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Solution

The fourth proportional to 108,142.68, 149,235.84 and 60,394.80 is: 83,344.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,142.68 : 149,235.84 = 60,394.80 : x
  2. Step 2: Convert to fraction form
    108,142.68/149,235.84 = 60,394.80/x
  3. Step 3: Cross multiply
    108,142.68x = 149,235.84 × 60,394.80
  4. Step 4: Simplify right side
    108,142.68x = 9,013,068,709.63
  5. Step 5: Solve for x
    x = 9,013,068,709.63/108,142.68
  6. Step 6: Final answer
    x = 83,344.23

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1.5x scale

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.