Home / 90,839.70-136,048.23-87,686.16

Finding the Fourth Proportional to 90,839.70, 136,048.23 and 87,686.16

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Solution

The fourth proportional to 90,839.70, 136,048.23 and 87,686.16 is: 131,325.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,839.70 : 136,048.23 = 87,686.16 : x
  2. Step 2: Convert to fraction form
    90,839.70/136,048.23 = 87,686.16/x
  3. Step 3: Cross multiply
    90,839.70x = 136,048.23 × 87,686.16
  4. Step 4: Simplify right side
    90,839.70x = 11,929,546,863.50
  5. Step 5: Solve for x
    x = 11,929,546,863.50/90,839.70
  6. Step 6: Final answer
    x = 131,325.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.