Home / 143,003.40-197,335.80-79,339.92

Finding the Fourth Proportional to 143,003.40, 197,335.80 and 79,339.92

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Solution

The fourth proportional to 143,003.40, 197,335.80 and 79,339.92 is: 109,484.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,003.40 : 197,335.80 = 79,339.92 : x
  2. Step 2: Convert to fraction form
    143,003.40/197,335.80 = 79,339.92/x
  3. Step 3: Cross multiply
    143,003.40x = 197,335.80 × 79,339.92
  4. Step 4: Simplify right side
    143,003.40x = 15,656,606,585.14
  5. Step 5: Solve for x
    x = 15,656,606,585.14/143,003.40
  6. Step 6: Final answer
    x = 109,484.16

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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.