Home / 143,954.47-198,657.85-79,423.70

Finding the Fourth Proportional to 143,954.47, 198,657.85 and 79,423.70

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Solution

The fourth proportional to 143,954.47, 198,657.85 and 79,423.70 is: 109,605.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,954.47 : 198,657.85 = 79,423.70 : x
  2. Step 2: Convert to fraction form
    143,954.47/198,657.85 = 79,423.70/x
  3. Step 3: Cross multiply
    143,954.47x = 198,657.85 × 79,423.70
  4. Step 4: Simplify right side
    143,954.47x = 15,778,140,996.84
  5. Step 5: Solve for x
    x = 15,778,140,996.84/143,954.47
  6. Step 6: Final answer
    x = 109,605.08

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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.