Home / 90,693.40-136,040.10-57,305.20

Finding the Fourth Proportional to 90,693.40, 136,040.10 and 57,305.20

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Solution

The fourth proportional to 90,693.40, 136,040.10 and 57,305.20 is: 85,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,693.40 : 136,040.10 = 57,305.20 : x
  2. Step 2: Convert to fraction form
    90,693.40/136,040.10 = 57,305.20/x
  3. Step 3: Cross multiply
    90,693.40x = 136,040.10 × 57,305.20
  4. Step 4: Simplify right side
    90,693.40x = 7,795,805,138.52
  5. Step 5: Solve for x
    x = 7,795,805,138.52/90,693.40
  6. Step 6: Final answer
    x = 85,957.80

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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.