Home / 100,570.13-138,782.29-60,306.11

Finding the Fourth Proportional to 100,570.13, 138,782.29 and 60,306.11

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Solution

The fourth proportional to 100,570.13, 138,782.29 and 60,306.11 is: 83,219.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,570.13 : 138,782.29 = 60,306.11 : x
  2. Step 2: Convert to fraction form
    100,570.13/138,782.29 = 60,306.11/x
  3. Step 3: Cross multiply
    100,570.13x = 138,782.29 × 60,306.11
  4. Step 4: Simplify right side
    100,570.13x = 8,369,420,046.79
  5. Step 5: Solve for x
    x = 8,369,420,046.79/100,570.13
  6. Step 6: Final answer
    x = 83,219.74

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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.