Home / 142,959.12-197,307.24-79,317.42

Finding the Fourth Proportional to 142,959.12, 197,307.24 and 79,317.42

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Solution

The fourth proportional to 142,959.12, 197,307.24 and 79,317.42 is: 109,471.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,959.12 : 197,307.24 = 79,317.42 : x
  2. Step 2: Convert to fraction form
    142,959.12/197,307.24 = 79,317.42/x
  3. Step 3: Cross multiply
    142,959.12x = 197,307.24 × 79,317.42
  4. Step 4: Simplify right side
    142,959.12x = 15,649,900,237.58
  5. Step 5: Solve for x
    x = 15,649,900,237.58/142,959.12
  6. Step 6: Final answer
    x = 109,471.16

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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.