Home / 142,971.12-197,309.52-79,315.92

Finding the Fourth Proportional to 142,971.12, 197,309.52 and 79,315.92

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Solution

The fourth proportional to 142,971.12, 197,309.52 and 79,315.92 is: 109,461.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,971.12 : 197,309.52 = 79,315.92 : x
  2. Step 2: Convert to fraction form
    142,971.12/197,309.52 = 79,315.92/x
  3. Step 3: Cross multiply
    142,971.12x = 197,309.52 × 79,315.92
  4. Step 4: Simplify right side
    142,971.12x = 15,649,786,103.56
  5. Step 5: Solve for x
    x = 15,649,786,103.56/142,971.12
  6. Step 6: Final answer
    x = 109,461.17

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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.