Home / 122,962.20-169,766.28-100,355.18

Finding the Fourth Proportional to 122,962.20, 169,766.28 and 100,355.18

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Solution

The fourth proportional to 122,962.20, 169,766.28 and 100,355.18 is: 138,554.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,962.20 : 169,766.28 = 100,355.18 : x
  2. Step 2: Convert to fraction form
    122,962.20/169,766.28 = 100,355.18/x
  3. Step 3: Cross multiply
    122,962.20x = 169,766.28 × 100,355.18
  4. Step 4: Simplify right side
    122,962.20x = 17,036,925,587.33
  5. Step 5: Solve for x
    x = 17,036,925,587.33/122,962.20
  6. Step 6: Final answer
    x = 138,554.17

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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.