Home / 143,543.40-198,098.63-79,881.20

Finding the Fourth Proportional to 143,543.40, 198,098.63 and 79,881.20

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Solution

The fourth proportional to 143,543.40, 198,098.63 and 79,881.20 is: 110,240.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,543.40 : 198,098.63 = 79,881.20 : x
  2. Step 2: Convert to fraction form
    143,543.40/198,098.63 = 79,881.20/x
  3. Step 3: Cross multiply
    143,543.40x = 198,098.63 × 79,881.20
  4. Step 4: Simplify right side
    143,543.40x = 15,824,356,382.36
  5. Step 5: Solve for x
    x = 15,824,356,382.36/143,543.40
  6. Step 6: Final answer
    x = 110,240.92

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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.