Home / 131,247.60-181,121.64-71,631.60

Finding the Fourth Proportional to 131,247.60, 181,121.64 and 71,631.60

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Solution

The fourth proportional to 131,247.60, 181,121.64 and 71,631.60 is: 98,851.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,247.60 : 181,121.64 = 71,631.60 : x
  2. Step 2: Convert to fraction form
    131,247.60/181,121.64 = 71,631.60/x
  3. Step 3: Cross multiply
    131,247.60x = 181,121.64 × 71,631.60
  4. Step 4: Simplify right side
    131,247.60x = 12,974,032,867.82
  5. Step 5: Solve for x
    x = 12,974,032,867.82/131,247.60
  6. Step 6: Final answer
    x = 98,851.58

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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.