Home / 142,777.62-197,034.45-79,116.78

Finding the Fourth Proportional to 142,777.62, 197,034.45 and 79,116.78

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Solution

The fourth proportional to 142,777.62, 197,034.45 and 79,116.78 is: 109,181.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,777.62 : 197,034.45 = 79,116.78 : x
  2. Step 2: Convert to fraction form
    142,777.62/197,034.45 = 79,116.78/x
  3. Step 3: Cross multiply
    142,777.62x = 197,034.45 × 79,116.78
  4. Step 4: Simplify right side
    142,777.62x = 15,588,731,233.07
  5. Step 5: Solve for x
    x = 15,588,731,233.07/142,777.62
  6. Step 6: Final answer
    x = 109,181.90

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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.