Home / 143,569.05-198,127.18-79,045.80

Finding the Fourth Proportional to 143,569.05, 198,127.18 and 79,045.80

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Solution

The fourth proportional to 143,569.05, 198,127.18 and 79,045.80 is: 109,084.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,569.05 : 198,127.18 = 79,045.80 : x
  2. Step 2: Convert to fraction form
    143,569.05/198,127.18 = 79,045.80/x
  3. Step 3: Cross multiply
    143,569.05x = 198,127.18 × 79,045.80
  4. Step 4: Simplify right side
    143,569.05x = 15,661,121,444.84
  5. Step 5: Solve for x
    x = 15,661,121,444.84/143,569.05
  6. Step 6: Final answer
    x = 109,084.25

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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.