Home / 100,179.50-138,247.71-55,470.38

Finding the Fourth Proportional to 100,179.50, 138,247.71 and 55,470.38

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Solution

The fourth proportional to 100,179.50, 138,247.71 and 55,470.38 is: 76,549.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,179.50 : 138,247.71 = 55,470.38 : x
  2. Step 2: Convert to fraction form
    100,179.50/138,247.71 = 55,470.38/x
  3. Step 3: Cross multiply
    100,179.50x = 138,247.71 × 55,470.38
  4. Step 4: Simplify right side
    100,179.50x = 7,668,653,007.83
  5. Step 5: Solve for x
    x = 7,668,653,007.83/100,179.50
  6. Step 6: Final answer
    x = 76,549.12

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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.