Home / 138,728.46-191,445.62-75,066.92

Finding the Fourth Proportional to 138,728.46, 191,445.62 and 75,066.92

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Solution

The fourth proportional to 138,728.46, 191,445.62 and 75,066.92 is: 103,592.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,728.46 : 191,445.62 = 75,066.92 : x
  2. Step 2: Convert to fraction form
    138,728.46/191,445.62 = 75,066.92/x
  3. Step 3: Cross multiply
    138,728.46x = 191,445.62 × 75,066.92
  4. Step 4: Simplify right side
    138,728.46x = 14,371,233,040.89
  5. Step 5: Solve for x
    x = 14,371,233,040.89/138,728.46
  6. Step 6: Final answer
    x = 103,592.54

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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.