Home / 138,816.20-191,566.14-75,153.98

Finding the Fourth Proportional to 138,816.20, 191,566.14 and 75,153.98

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Solution

The fourth proportional to 138,816.20, 191,566.14 and 75,153.98 is: 103,712.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,816.20 : 191,566.14 = 75,153.98 : x
  2. Step 2: Convert to fraction form
    138,816.20/191,566.14 = 75,153.98/x
  3. Step 3: Cross multiply
    138,816.20x = 191,566.14 × 75,153.98
  4. Step 4: Simplify right side
    138,816.20x = 14,396,957,854.24
  5. Step 5: Solve for x
    x = 14,396,957,854.24/138,816.20
  6. Step 6: Final answer
    x = 103,712.38

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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.