Home / 91,975.56-138,138.28-57,158.52

Finding the Fourth Proportional to 91,975.56, 138,138.28 and 57,158.52

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Solution

The fourth proportional to 91,975.56, 138,138.28 and 57,158.52 is: 85,846.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,975.56 : 138,138.28 = 57,158.52 : x
  2. Step 2: Convert to fraction form
    91,975.56/138,138.28 = 57,158.52/x
  3. Step 3: Cross multiply
    91,975.56x = 138,138.28 × 57,158.52
  4. Step 4: Simplify right side
    91,975.56x = 7,895,779,640.15
  5. Step 5: Solve for x
    x = 7,895,779,640.15/91,975.56
  6. Step 6: Final answer
    x = 85,846.50

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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.