Home / 138,766.36-191,497.57-75,104.16

Finding the Fourth Proportional to 138,766.36, 191,497.57 and 75,104.16

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Solution

The fourth proportional to 138,766.36, 191,497.57 and 75,104.16 is: 103,643.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,766.36 : 191,497.57 = 75,104.16 : x
  2. Step 2: Convert to fraction form
    138,766.36/191,497.57 = 75,104.16/x
  3. Step 3: Cross multiply
    138,766.36x = 191,497.57 × 75,104.16
  4. Step 4: Simplify right side
    138,766.36x = 14,382,264,136.89
  5. Step 5: Solve for x
    x = 14,382,264,136.89/138,766.36
  6. Step 6: Final answer
    x = 103,643.74

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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.