Home / 142,776.98-197,040.12-79,113.42

Finding the Fourth Proportional to 142,776.98, 197,040.12 and 79,113.42

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Solution

The fourth proportional to 142,776.98, 197,040.12 and 79,113.42 is: 109,180.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,776.98 : 197,040.12 = 79,113.42 : x
  2. Step 2: Convert to fraction form
    142,776.98/197,040.12 = 79,113.42/x
  3. Step 3: Cross multiply
    142,776.98x = 197,040.12 × 79,113.42
  4. Step 4: Simplify right side
    142,776.98x = 15,588,517,770.41
  5. Step 5: Solve for x
    x = 15,588,517,770.41/142,776.98
  6. Step 6: Final answer
    x = 109,180.89

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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.