Home / 143,036.68-197,405.22-79,374.92

Finding the Fourth Proportional to 143,036.68, 197,405.22 and 79,374.92

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Solution

The fourth proportional to 143,036.68, 197,405.22 and 79,374.92 is: 109,545.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,036.68 : 197,405.22 = 79,374.92 : x
  2. Step 2: Convert to fraction form
    143,036.68/197,405.22 = 79,374.92/x
  3. Step 3: Cross multiply
    143,036.68x = 197,405.22 × 79,374.92
  4. Step 4: Simplify right side
    143,036.68x = 15,669,023,545.08
  5. Step 5: Solve for x
    x = 15,669,023,545.08/143,036.68
  6. Step 6: Final answer
    x = 109,545.49

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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.