Home / 153,997.04-212,519.40-90,380.72

Finding the Fourth Proportional to 153,997.04, 212,519.40 and 90,380.72

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Solution

The fourth proportional to 153,997.04, 212,519.40 and 90,380.72 is: 124,727.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,997.04 : 212,519.40 = 90,380.72 : x
  2. Step 2: Convert to fraction form
    153,997.04/212,519.40 = 90,380.72/x
  3. Step 3: Cross multiply
    153,997.04x = 212,519.40 × 90,380.72
  4. Step 4: Simplify right side
    153,997.04x = 19,207,656,385.97
  5. Step 5: Solve for x
    x = 19,207,656,385.97/153,997.04
  6. Step 6: Final answer
    x = 124,727.44

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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.