Home / 113,882.62-157,158.02-66,139.05

Finding the Fourth Proportional to 113,882.62, 157,158.02 and 66,139.05

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Solution

The fourth proportional to 113,882.62, 157,158.02 and 66,139.05 is: 91,271.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,882.62 : 157,158.02 = 66,139.05 : x
  2. Step 2: Convert to fraction form
    113,882.62/157,158.02 = 66,139.05/x
  3. Step 3: Cross multiply
    113,882.62x = 157,158.02 × 66,139.05
  4. Step 4: Simplify right side
    113,882.62x = 10,394,282,142.68
  5. Step 5: Solve for x
    x = 10,394,282,142.68/113,882.62
  6. Step 6: Final answer
    x = 91,271.89

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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.