Home / 124,116.76-186,268.70-90,921.75

Finding the Fourth Proportional to 124,116.76, 186,268.70 and 90,921.75

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Solution

The fourth proportional to 124,116.76, 186,268.70 and 90,921.75 is: 136,451.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,116.76 : 186,268.70 = 90,921.75 : x
  2. Step 2: Convert to fraction form
    124,116.76/186,268.70 = 90,921.75/x
  3. Step 3: Cross multiply
    124,116.76x = 186,268.70 × 90,921.75
  4. Step 4: Simplify right side
    124,116.76x = 16,935,876,174.23
  5. Step 5: Solve for x
    x = 16,935,876,174.23/124,116.76
  6. Step 6: Final answer
    x = 136,451.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.