Home / 138,746.48-191,423.24-90,326.24

Finding the Fourth Proportional to 138,746.48, 191,423.24 and 90,326.24

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Solution

The fourth proportional to 138,746.48, 191,423.24 and 90,326.24 is: 124,619.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,746.48 : 191,423.24 = 90,326.24 : x
  2. Step 2: Convert to fraction form
    138,746.48/191,423.24 = 90,326.24/x
  3. Step 3: Cross multiply
    138,746.48x = 191,423.24 × 90,326.24
  4. Step 4: Simplify right side
    138,746.48x = 17,290,541,517.82
  5. Step 5: Solve for x
    x = 17,290,541,517.82/138,746.48
  6. Step 6: Final answer
    x = 124,619.68

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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.