Home / 143,647.16-198,231.23-79,115.17

Finding the Fourth Proportional to 143,647.16, 198,231.23 and 79,115.17

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Solution

The fourth proportional to 143,647.16, 198,231.23 and 79,115.17 is: 109,177.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,647.16 : 198,231.23 = 79,115.17 : x
  2. Step 2: Convert to fraction form
    143,647.16/198,231.23 = 79,115.17/x
  3. Step 3: Cross multiply
    143,647.16x = 198,231.23 × 79,115.17
  4. Step 4: Simplify right side
    143,647.16x = 15,683,097,460.76
  5. Step 5: Solve for x
    x = 15,683,097,460.76/143,647.16
  6. Step 6: Final answer
    x = 109,177.92

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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.