Home / 135,689.06-187,315.19-90,442.46

Finding the Fourth Proportional to 135,689.06, 187,315.19 and 90,442.46

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Solution

The fourth proportional to 135,689.06, 187,315.19 and 90,442.46 is: 124,853.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,689.06 : 187,315.19 = 90,442.46 : x
  2. Step 2: Convert to fraction form
    135,689.06/187,315.19 = 90,442.46/x
  3. Step 3: Cross multiply
    135,689.06x = 187,315.19 × 90,442.46
  4. Step 4: Simplify right side
    135,689.06x = 16,941,245,190.18
  5. Step 5: Solve for x
    x = 16,941,245,190.18/135,689.06
  6. Step 6: Final answer
    x = 124,853.44

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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.