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Finding the Fourth Proportional to 122,649.04, 169,250.88 and 74,982.16

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Solution

The fourth proportional to 122,649.04, 169,250.88 and 74,982.16 is: 103,472.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,649.04 : 169,250.88 = 74,982.16 : x
  2. Step 2: Convert to fraction form
    122,649.04/169,250.88 = 74,982.16/x
  3. Step 3: Cross multiply
    122,649.04x = 169,250.88 × 74,982.16
  4. Step 4: Simplify right side
    122,649.04x = 12,690,796,564.30
  5. Step 5: Solve for x
    x = 12,690,796,564.30/122,649.04
  6. Step 6: Final answer
    x = 103,472.45

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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.