Home / 142,839.06-197,097.21-79,176.84

Finding the Fourth Proportional to 142,839.06, 197,097.21 and 79,176.84

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Solution

The fourth proportional to 142,839.06, 197,097.21 and 79,176.84 is: 109,252.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,839.06 : 197,097.21 = 79,176.84 : x
  2. Step 2: Convert to fraction form
    142,839.06/197,097.21 = 79,176.84/x
  3. Step 3: Cross multiply
    142,839.06x = 197,097.21 × 79,176.84
  4. Step 4: Simplify right side
    142,839.06x = 15,605,534,260.62
  5. Step 5: Solve for x
    x = 15,605,534,260.62/142,839.06
  6. Step 6: Final answer
    x = 109,252.57

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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.