Home / 135,432.39-186,927.80-90,112.28

Finding the Fourth Proportional to 135,432.39, 186,927.80 and 90,112.28

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Solution

The fourth proportional to 135,432.39, 186,927.80 and 90,112.28 is: 124,375.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,432.39 : 186,927.80 = 90,112.28 : x
  2. Step 2: Convert to fraction form
    135,432.39/186,927.80 = 90,112.28/x
  3. Step 3: Cross multiply
    135,432.39x = 186,927.80 × 90,112.28
  4. Step 4: Simplify right side
    135,432.39x = 16,844,490,253.38
  5. Step 5: Solve for x
    x = 16,844,490,253.38/135,432.39
  6. Step 6: Final answer
    x = 124,375.64

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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.