Home / 142,759.74-196,999.86-79,092.90

Finding the Fourth Proportional to 142,759.74, 196,999.86 and 79,092.90

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Solution

The fourth proportional to 142,759.74, 196,999.86 and 79,092.90 is: 109,143.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,759.74 : 196,999.86 = 79,092.90 : x
  2. Step 2: Convert to fraction form
    142,759.74/196,999.86 = 79,092.90/x
  3. Step 3: Cross multiply
    142,759.74x = 196,999.86 × 79,092.90
  4. Step 4: Simplify right side
    142,759.74x = 15,581,290,226.99
  5. Step 5: Solve for x
    x = 15,581,290,226.99/142,759.74
  6. Step 6: Final answer
    x = 109,143.45

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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.