Home / 124,631.01-172,134.21-90,790.83

Finding the Fourth Proportional to 124,631.01, 172,134.21 and 90,790.83

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Solution

The fourth proportional to 124,631.01, 172,134.21 and 90,790.83 is: 125,395.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,631.01 : 172,134.21 = 90,790.83 : x
  2. Step 2: Convert to fraction form
    124,631.01/172,134.21 = 90,790.83/x
  3. Step 3: Cross multiply
    124,631.01x = 172,134.21 × 90,790.83
  4. Step 4: Simplify right side
    124,631.01x = 15,628,207,797.29
  5. Step 5: Solve for x
    x = 15,628,207,797.29/124,631.01
  6. Step 6: Final answer
    x = 125,395.82

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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.