Home / 142,084.93-196,076.25-78,422.71

Finding the Fourth Proportional to 142,084.93, 196,076.25 and 78,422.71

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Solution

The fourth proportional to 142,084.93, 196,076.25 and 78,422.71 is: 108,222.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,084.93 : 196,076.25 = 78,422.71 : x
  2. Step 2: Convert to fraction form
    142,084.93/196,076.25 = 78,422.71/x
  3. Step 3: Cross multiply
    142,084.93x = 196,076.25 × 78,422.71
  4. Step 4: Simplify right side
    142,084.93x = 15,376,830,891.64
  5. Step 5: Solve for x
    x = 15,376,830,891.64/142,084.93
  6. Step 6: Final answer
    x = 108,222.81

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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.