Home / 142,973.29-197,326.79-79,331.59

Finding the Fourth Proportional to 142,973.29, 197,326.79 and 79,331.59

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Solution

The fourth proportional to 142,973.29, 197,326.79 and 79,331.59 is: 109,490.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,973.29 : 197,326.79 = 79,331.59 : x
  2. Step 2: Convert to fraction form
    142,973.29/197,326.79 = 79,331.59/x
  3. Step 3: Cross multiply
    142,973.29x = 197,326.79 × 79,331.59
  4. Step 4: Simplify right side
    142,973.29x = 15,654,248,000.30
  5. Step 5: Solve for x
    x = 15,654,248,000.30/142,973.29
  6. Step 6: Final answer
    x = 109,490.72

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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.