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Finding the Fourth Proportional to 121,496.54, 182,306.28 and 81,970.59

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Solution

The fourth proportional to 121,496.54, 182,306.28 and 81,970.59 is: 122,997.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,496.54 : 182,306.28 = 81,970.59 : x
  2. Step 2: Convert to fraction form
    121,496.54/182,306.28 = 81,970.59/x
  3. Step 3: Cross multiply
    121,496.54x = 182,306.28 × 81,970.59
  4. Step 4: Simplify right side
    121,496.54x = 14,943,753,332.31
  5. Step 5: Solve for x
    x = 14,943,753,332.31/121,496.54
  6. Step 6: Final answer
    x = 122,997.36

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1.5x scale

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.