Home / 143,432.73-197,941.98-78,904.68

Finding the Fourth Proportional to 143,432.73, 197,941.98 and 78,904.68

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Solution

The fourth proportional to 143,432.73, 197,941.98 and 78,904.68 is: 108,891.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,432.73 : 197,941.98 = 78,904.68 : x
  2. Step 2: Convert to fraction form
    143,432.73/197,941.98 = 78,904.68/x
  3. Step 3: Cross multiply
    143,432.73x = 197,941.98 × 78,904.68
  4. Step 4: Simplify right side
    143,432.73x = 15,618,548,590.47
  5. Step 5: Solve for x
    x = 15,618,548,590.47/143,432.73
  6. Step 6: Final answer
    x = 108,891.11

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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.