Home / 143,957.12-198,661.51-79,426.35

Finding the Fourth Proportional to 143,957.12, 198,661.51 and 79,426.35

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Solution

The fourth proportional to 143,957.12, 198,661.51 and 79,426.35 is: 109,608.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,957.12 : 198,661.51 = 79,426.35 : x
  2. Step 2: Convert to fraction form
    143,957.12/198,661.51 = 79,426.35/x
  3. Step 3: Cross multiply
    143,957.12x = 198,661.51 × 79,426.35
  4. Step 4: Simplify right side
    143,957.12x = 15,778,958,426.22
  5. Step 5: Solve for x
    x = 15,778,958,426.22/143,957.12
  6. Step 6: Final answer
    x = 109,608.74

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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.