Home / 142,186.94-213,258.54-47,418.78

Finding the Fourth Proportional to 142,186.94, 213,258.54 and 47,418.78

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Solution

The fourth proportional to 142,186.94, 213,258.54 and 47,418.78 is: 71,120.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,186.94 : 213,258.54 = 47,418.78 : x
  2. Step 2: Convert to fraction form
    142,186.94/213,258.54 = 47,418.78/x
  3. Step 3: Cross multiply
    142,186.94x = 213,258.54 × 47,418.78
  4. Step 4: Simplify right side
    142,186.94x = 10,112,459,791.38
  5. Step 5: Solve for x
    x = 10,112,459,791.38/142,186.94
  6. Step 6: Final answer
    x = 71,120.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.