Home / 142,776.84-197,029.11-79,113.27

Finding the Fourth Proportional to 142,776.84, 197,029.11 and 79,113.27

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Solution

The fourth proportional to 142,776.84, 197,029.11 and 79,113.27 is: 109,174.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,776.84 : 197,029.11 = 79,113.27 : x
  2. Step 2: Convert to fraction form
    142,776.84/197,029.11 = 79,113.27/x
  3. Step 3: Cross multiply
    142,776.84x = 197,029.11 × 79,113.27
  4. Step 4: Simplify right side
    142,776.84x = 15,587,617,177.29
  5. Step 5: Solve for x
    x = 15,587,617,177.29/142,776.84
  6. Step 6: Final answer
    x = 109,174.69

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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.