Home / 143,581.16-198,139.02-79,915.16

Finding the Fourth Proportional to 143,581.16, 198,139.02 and 79,915.16

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Solution

The fourth proportional to 143,581.16, 198,139.02 and 79,915.16 is: 110,281.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,581.16 : 198,139.02 = 79,915.16 : x
  2. Step 2: Convert to fraction form
    143,581.16/198,139.02 = 79,915.16/x
  3. Step 3: Cross multiply
    143,581.16x = 198,139.02 × 79,915.16
  4. Step 4: Simplify right side
    143,581.16x = 15,834,311,485.54
  5. Step 5: Solve for x
    x = 15,834,311,485.54/143,581.16
  6. Step 6: Final answer
    x = 110,281.26

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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.