Home / 140,883.12-194,418.36-77,221.20

Finding the Fourth Proportional to 140,883.12, 194,418.36 and 77,221.20

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Solution

The fourth proportional to 140,883.12, 194,418.36 and 77,221.20 is: 106,565.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,883.12 : 194,418.36 = 77,221.20 : x
  2. Step 2: Convert to fraction form
    140,883.12/194,418.36 = 77,221.20/x
  3. Step 3: Cross multiply
    140,883.12x = 194,418.36 × 77,221.20
  4. Step 4: Simplify right side
    140,883.12x = 15,013,219,061.23
  5. Step 5: Solve for x
    x = 15,013,219,061.23/140,883.12
  6. Step 6: Final answer
    x = 106,565.07

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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.