Home / 138,723.95-191,438.57-75,061.46

Finding the Fourth Proportional to 138,723.95, 191,438.57 and 75,061.46

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Solution

The fourth proportional to 138,723.95, 191,438.57 and 75,061.46 is: 103,584.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,723.95 : 191,438.57 = 75,061.46 : x
  2. Step 2: Convert to fraction form
    138,723.95/191,438.57 = 75,061.46/x
  3. Step 3: Cross multiply
    138,723.95x = 191,438.57 × 75,061.46
  4. Step 4: Simplify right side
    138,723.95x = 14,369,658,189.20
  5. Step 5: Solve for x
    x = 14,369,658,189.20/138,723.95
  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.