Home / 142,364.06-196,452.78-78,693.20

Finding the Fourth Proportional to 142,364.06, 196,452.78 and 78,693.20

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Solution

The fourth proportional to 142,364.06, 196,452.78 and 78,693.20 is: 108,591.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,364.06 : 196,452.78 = 78,693.20 : x
  2. Step 2: Convert to fraction form
    142,364.06/196,452.78 = 78,693.20/x
  3. Step 3: Cross multiply
    142,364.06x = 196,452.78 × 78,693.20
  4. Step 4: Simplify right side
    142,364.06x = 15,459,497,907.10
  5. Step 5: Solve for x
    x = 15,459,497,907.10/142,364.06
  6. Step 6: Final answer
    x = 108,591.30

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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.