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Finding the Fourth Proportional to 137,584.60, 205,988.10 and 123,587.80

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Solution

The fourth proportional to 137,584.60, 205,988.10 and 123,587.80 is: 185,032.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,584.60 : 205,988.10 = 123,587.80 : x
  2. Step 2: Convert to fraction form
    137,584.60/205,988.10 = 123,587.80/x
  3. Step 3: Cross multiply
    137,584.60x = 205,988.10 × 123,587.80
  4. Step 4: Simplify right side
    137,584.60x = 25,457,616,105.18
  5. Step 5: Solve for x
    x = 25,457,616,105.18/137,584.60
  6. Step 6: Final answer
    x = 185,032.45

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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.