Home / 138,725.16-191,439.36-75,061.56

Finding the Fourth Proportional to 138,725.16, 191,439.36 and 75,061.56

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Solution

The fourth proportional to 138,725.16, 191,439.36 and 75,061.56 is: 103,584.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,725.16 : 191,439.36 = 75,061.56 : x
  2. Step 2: Convert to fraction form
    138,725.16/191,439.36 = 75,061.56/x
  3. Step 3: Cross multiply
    138,725.16x = 191,439.36 × 75,061.56
  4. Step 4: Simplify right side
    138,725.16x = 14,369,737,007.00
  5. Step 5: Solve for x
    x = 14,369,737,007.00/138,725.16
  6. Step 6: Final answer
    x = 103,584.22

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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.