Home / 138,723.64-191,438.08-75,061.48

Finding the Fourth Proportional to 138,723.64, 191,438.08 and 75,061.48

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Solution

The fourth proportional to 138,723.64, 191,438.08 and 75,061.48 is: 103,584.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,723.64 : 191,438.08 = 75,061.48 : x
  2. Step 2: Convert to fraction form
    138,723.64/191,438.08 = 75,061.48/x
  3. Step 3: Cross multiply
    138,723.64x = 191,438.08 × 75,061.48
  4. Step 4: Simplify right side
    138,723.64x = 14,369,625,613.16
  5. Step 5: Solve for x
    x = 14,369,625,613.16/138,723.64
  6. Step 6: Final answer
    x = 103,584.55

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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.