Home / 142,571.52-196,752.80-78,915.24

Finding the Fourth Proportional to 142,571.52, 196,752.80 and 78,915.24

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Solution

The fourth proportional to 142,571.52, 196,752.80 and 78,915.24 is: 108,905.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,571.52 : 196,752.80 = 78,915.24 : x
  2. Step 2: Convert to fraction form
    142,571.52/196,752.80 = 78,915.24/x
  3. Step 3: Cross multiply
    142,571.52x = 196,752.80 × 78,915.24
  4. Step 4: Simplify right side
    142,571.52x = 15,526,794,432.67
  5. Step 5: Solve for x
    x = 15,526,794,432.67/142,571.52
  6. Step 6: Final answer
    x = 108,905.30

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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.