Home / 142,767.60-197,029.96-79,111.28

Finding the Fourth Proportional to 142,767.60, 197,029.96 and 79,111.28

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Solution

The fourth proportional to 142,767.60, 197,029.96 and 79,111.28 is: 109,179.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,767.60 : 197,029.96 = 79,111.28 : x
  2. Step 2: Convert to fraction form
    142,767.60/197,029.96 = 79,111.28/x
  3. Step 3: Cross multiply
    142,767.60x = 197,029.96 × 79,111.28
  4. Step 4: Simplify right side
    142,767.60x = 15,587,292,333.95
  5. Step 5: Solve for x
    x = 15,587,292,333.95/142,767.60
  6. Step 6: Final answer
    x = 109,179.48

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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.