Home / 138,732.44-191,403.92-90,312.26

Finding the Fourth Proportional to 138,732.44, 191,403.92 and 90,312.26

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Solution

The fourth proportional to 138,732.44, 191,403.92 and 90,312.26 is: 124,600.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,732.44 : 191,403.92 = 90,312.26 : x
  2. Step 2: Convert to fraction form
    138,732.44/191,403.92 = 90,312.26/x
  3. Step 3: Cross multiply
    138,732.44x = 191,403.92 × 90,312.26
  4. Step 4: Simplify right side
    138,732.44x = 17,286,119,179.48
  5. Step 5: Solve for x
    x = 17,286,119,179.48/138,732.44
  6. Step 6: Final answer
    x = 124,600.42

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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.