Home / 142,886.52-197,175.20-78,343.29

Finding the Fourth Proportional to 142,886.52, 197,175.20 and 78,343.29

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Solution

The fourth proportional to 142,886.52, 197,175.20 and 78,343.29 is: 108,109.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,886.52 : 197,175.20 = 78,343.29 : x
  2. Step 2: Convert to fraction form
    142,886.52/197,175.20 = 78,343.29/x
  3. Step 3: Cross multiply
    142,886.52x = 197,175.20 × 78,343.29
  4. Step 4: Simplify right side
    142,886.52x = 15,447,353,482.69
  5. Step 5: Solve for x
    x = 15,447,353,482.69/142,886.52
  6. Step 6: Final answer
    x = 108,109.24

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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.