Home / 113,849.38-157,121.13-66,117.70

Finding the Fourth Proportional to 113,849.38, 157,121.13 and 66,117.70

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Solution

The fourth proportional to 113,849.38, 157,121.13 and 66,117.70 is: 91,247.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,849.38 : 157,121.13 = 66,117.70 : x
  2. Step 2: Convert to fraction form
    113,849.38/157,121.13 = 66,117.70/x
  3. Step 3: Cross multiply
    113,849.38x = 157,121.13 × 66,117.70
  4. Step 4: Simplify right side
    113,849.38x = 10,388,487,737.00
  5. Step 5: Solve for x
    x = 10,388,487,737.00/113,849.38
  6. Step 6: Final answer
    x = 91,247.64

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1.5x scale

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.