Home / 113,856.88-157,131.48-66,125.20

Finding the Fourth Proportional to 113,856.88, 157,131.48 and 66,125.20

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Solution

The fourth proportional to 113,856.88, 157,131.48 and 66,125.20 is: 91,257.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,856.88 : 157,131.48 = 66,125.20 : x
  2. Step 2: Convert to fraction form
    113,856.88/157,131.48 = 66,125.20/x
  3. Step 3: Cross multiply
    113,856.88x = 157,131.48 × 66,125.20
  4. Step 4: Simplify right side
    113,856.88x = 10,390,350,541.30
  5. Step 5: Solve for x
    x = 10,390,350,541.30/113,856.88
  6. Step 6: Final answer
    x = 91,257.99

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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.