Home / 90,040.46-123,897.26-87,301.22

Finding the Fourth Proportional to 90,040.46, 123,897.26 and 87,301.22

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Solution

The fourth proportional to 90,040.46, 123,897.26 and 87,301.22 is: 120,128.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,040.46 : 123,897.26 = 87,301.22 : x
  2. Step 2: Convert to fraction form
    90,040.46/123,897.26 = 87,301.22/x
  3. Step 3: Cross multiply
    90,040.46x = 123,897.26 × 87,301.22
  4. Step 4: Simplify right side
    90,040.46x = 10,816,381,516.15
  5. Step 5: Solve for x
    x = 10,816,381,516.15/90,040.46
  6. Step 6: Final answer
    x = 120,128.01

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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.