Home / 147,726.20-221,330.10-121,287.80

Finding the Fourth Proportional to 147,726.20, 221,330.10 and 121,287.80

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Solution

The fourth proportional to 147,726.20, 221,330.10 and 121,287.80 is: 181,718.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,726.20 : 221,330.10 = 121,287.80 : x
  2. Step 2: Convert to fraction form
    147,726.20/221,330.10 = 121,287.80/x
  3. Step 3: Cross multiply
    147,726.20x = 221,330.10 × 121,287.80
  4. Step 4: Simplify right side
    147,726.20x = 26,844,640,902.78
  5. Step 5: Solve for x
    x = 26,844,640,902.78/147,726.20
  6. Step 6: Final answer
    x = 181,718.89

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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.