Home / 142,999.38-197,339.22-79,337.25

Finding the Fourth Proportional to 142,999.38, 197,339.22 and 79,337.25

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Solution

The fourth proportional to 142,999.38, 197,339.22 and 79,337.25 is: 109,485.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,999.38 : 197,339.22 = 79,337.25 : x
  2. Step 2: Convert to fraction form
    142,999.38/197,339.22 = 79,337.25/x
  3. Step 3: Cross multiply
    142,999.38x = 197,339.22 × 79,337.25
  4. Step 4: Simplify right side
    142,999.38x = 15,656,351,031.95
  5. Step 5: Solve for x
    x = 15,656,351,031.95/142,999.38
  6. Step 6: Final answer
    x = 109,485.45

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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.