Home / 142,375.68-196,482.54-78,717.58

Finding the Fourth Proportional to 142,375.68, 196,482.54 and 78,717.58

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Solution

The fourth proportional to 142,375.68, 196,482.54 and 78,717.58 is: 108,632.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,375.68 : 196,482.54 = 78,717.58 : x
  2. Step 2: Convert to fraction form
    142,375.68/196,482.54 = 78,717.58/x
  3. Step 3: Cross multiply
    142,375.68x = 196,482.54 × 78,717.58
  4. Step 4: Simplify right side
    142,375.68x = 15,466,630,061.05
  5. Step 5: Solve for x
    x = 15,466,630,061.05/142,375.68
  6. Step 6: Final answer
    x = 108,632.53

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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.