Home / 142,827.72-197,116.59-79,177.79

Finding the Fourth Proportional to 142,827.72, 197,116.59 and 79,177.79

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Solution

The fourth proportional to 142,827.72, 197,116.59 and 79,177.79 is: 109,273.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,827.72 : 197,116.59 = 79,177.79 : x
  2. Step 2: Convert to fraction form
    142,827.72/197,116.59 = 79,177.79/x
  3. Step 3: Cross multiply
    142,827.72x = 197,116.59 × 79,177.79
  4. Step 4: Simplify right side
    142,827.72x = 15,607,254,982.95
  5. Step 5: Solve for x
    x = 15,607,254,982.95/142,827.72
  6. Step 6: Final answer
    x = 109,273.29

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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.