Home / 143,587.86-198,157.77-79,929.69

Finding the Fourth Proportional to 143,587.86, 198,157.77 and 79,929.69

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Solution

The fourth proportional to 143,587.86, 198,157.77 and 79,929.69 is: 110,306.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,587.86 : 198,157.77 = 79,929.69 : x
  2. Step 2: Convert to fraction form
    143,587.86/198,157.77 = 79,929.69/x
  3. Step 3: Cross multiply
    143,587.86x = 198,157.77 × 79,929.69
  4. Step 4: Simplify right side
    143,587.86x = 15,838,689,127.19
  5. Step 5: Solve for x
    x = 15,838,689,127.19/143,587.86
  6. Step 6: Final answer
    x = 110,306.60

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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.