Home / 124,724.68-186,788.34-90,900.04

Finding the Fourth Proportional to 124,724.68, 186,788.34 and 90,900.04

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Solution

The fourth proportional to 124,724.68, 186,788.34 and 90,900.04 is: 136,132.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,724.68 : 186,788.34 = 90,900.04 : x
  2. Step 2: Convert to fraction form
    124,724.68/186,788.34 = 90,900.04/x
  3. Step 3: Cross multiply
    124,724.68x = 186,788.34 × 90,900.04
  4. Step 4: Simplify right side
    124,724.68x = 16,979,067,577.53
  5. Step 5: Solve for x
    x = 16,979,067,577.53/124,724.68
  6. Step 6: Final answer
    x = 136,132.38

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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.