Home / 142,482.24-196,631.28-78,818.94

Finding the Fourth Proportional to 142,482.24, 196,631.28 and 78,818.94

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Solution

The fourth proportional to 142,482.24, 196,631.28 and 78,818.94 is: 108,773.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,482.24 : 196,631.28 = 78,818.94 : x
  2. Step 2: Convert to fraction form
    142,482.24/196,631.28 = 78,818.94/x
  3. Step 3: Cross multiply
    142,482.24x = 196,631.28 × 78,818.94
  4. Step 4: Simplify right side
    142,482.24x = 15,498,269,060.44
  5. Step 5: Solve for x
    x = 15,498,269,060.44/142,482.24
  6. Step 6: Final answer
    x = 108,773.34

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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.