Home / 142,751.71-196,988.79-79,084.90

Finding the Fourth Proportional to 142,751.71, 196,988.79 and 79,084.90

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Solution

The fourth proportional to 142,751.71, 196,988.79 and 79,084.90 is: 109,132.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,751.71 : 196,988.79 = 79,084.90 : x
  2. Step 2: Convert to fraction form
    142,751.71/196,988.79 = 79,084.90/x
  3. Step 3: Cross multiply
    142,751.71x = 196,988.79 × 79,084.90
  4. Step 4: Simplify right side
    142,751.71x = 15,578,838,758.27
  5. Step 5: Solve for x
    x = 15,578,838,758.27/142,751.71
  6. Step 6: Final answer
    x = 109,132.41

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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.