Home / 90,713.12-136,072.41-75,040.53

Finding the Fourth Proportional to 90,713.12, 136,072.41 and 75,040.53

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Solution

The fourth proportional to 90,713.12, 136,072.41 and 75,040.53 is: 112,563.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,713.12 : 136,072.41 = 75,040.53 : x
  2. Step 2: Convert to fraction form
    90,713.12/136,072.41 = 75,040.53/x
  3. Step 3: Cross multiply
    90,713.12x = 136,072.41 × 75,040.53
  4. Step 4: Simplify right side
    90,713.12x = 10,210,944,973.10
  5. Step 5: Solve for x
    x = 10,210,944,973.10/90,713.12
  6. Step 6: Final answer
    x = 112,563.05

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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.