Home / 91,436.19-136,546.71-90,446.57

Finding the Fourth Proportional to 91,436.19, 136,546.71 and 90,446.57

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Solution

The fourth proportional to 91,436.19, 136,546.71 and 90,446.57 is: 135,068.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,436.19 : 136,546.71 = 90,446.57 : x
  2. Step 2: Convert to fraction form
    91,436.19/136,546.71 = 90,446.57/x
  3. Step 3: Cross multiply
    91,436.19x = 136,546.71 × 90,446.57
  4. Step 4: Simplify right side
    91,436.19x = 12,350,182,331.26
  5. Step 5: Solve for x
    x = 12,350,182,331.26/91,436.19
  6. Step 6: Final answer
    x = 135,068.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.