Home / 142,319.04-196,388.46-78,656.82

Finding the Fourth Proportional to 142,319.04, 196,388.46 and 78,656.82

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Solution

The fourth proportional to 142,319.04, 196,388.46 and 78,656.82 is: 108,539.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,319.04 : 196,388.46 = 78,656.82 : x
  2. Step 2: Convert to fraction form
    142,319.04/196,388.46 = 78,656.82/x
  3. Step 3: Cross multiply
    142,319.04x = 196,388.46 × 78,656.82
  4. Step 4: Simplify right side
    142,319.04x = 15,447,291,748.30
  5. Step 5: Solve for x
    x = 15,447,291,748.30/142,319.04
  6. Step 6: Final answer
    x = 108,539.88

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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.