Home / 143,430.39-197,931.13-79,766.82

Finding the Fourth Proportional to 143,430.39, 197,931.13 and 79,766.82

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Solution

The fourth proportional to 143,430.39, 197,931.13 and 79,766.82 is: 110,076.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,430.39 : 197,931.13 = 79,766.82 : x
  2. Step 2: Convert to fraction form
    143,430.39/197,931.13 = 79,766.82/x
  3. Step 3: Cross multiply
    143,430.39x = 197,931.13 × 79,766.82
  4. Step 4: Simplify right side
    143,430.39x = 15,788,336,619.69
  5. Step 5: Solve for x
    x = 15,788,336,619.69/143,430.39
  6. Step 6: Final answer
    x = 110,076.65

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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.