Home / 138,851.04-191,614.10-75,188.82

Finding the Fourth Proportional to 138,851.04, 191,614.10 and 75,188.82

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Solution

The fourth proportional to 138,851.04, 191,614.10 and 75,188.82 is: 103,760.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,851.04 : 191,614.10 = 75,188.82 : x
  2. Step 2: Convert to fraction form
    138,851.04/191,614.10 = 75,188.82/x
  3. Step 3: Cross multiply
    138,851.04x = 191,614.10 × 75,188.82
  4. Step 4: Simplify right side
    138,851.04x = 14,407,238,074.36
  5. Step 5: Solve for x
    x = 14,407,238,074.36/138,851.04
  6. Step 6: Final answer
    x = 103,760.39

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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.