Home / 142,780.80-197,026.68-79,117.24

Finding the Fourth Proportional to 142,780.80, 197,026.68 and 79,117.24

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Solution

The fourth proportional to 142,780.80, 197,026.68 and 79,117.24 is: 109,175.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,780.80 : 197,026.68 = 79,117.24 : x
  2. Step 2: Convert to fraction form
    142,780.80/197,026.68 = 79,117.24/x
  3. Step 3: Cross multiply
    142,780.80x = 197,026.68 × 79,117.24
  4. Step 4: Simplify right side
    142,780.80x = 15,588,207,127.96
  5. Step 5: Solve for x
    x = 15,588,207,127.96/142,780.80
  6. Step 6: Final answer
    x = 109,175.79

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1.5x scale

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.