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Finding the Fourth Proportional to 142,716.76, 196,949.12 and 79,058.68

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Solution

The fourth proportional to 142,716.76, 196,949.12 and 79,058.68 is: 109,100.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,716.76 : 196,949.12 = 79,058.68 : x
  2. Step 2: Convert to fraction form
    142,716.76/196,949.12 = 79,058.68/x
  3. Step 3: Cross multiply
    142,716.76x = 196,949.12 × 79,058.68
  4. Step 4: Simplify right side
    142,716.76x = 15,570,537,454.36
  5. Step 5: Solve for x
    x = 15,570,537,454.36/142,716.76
  6. Step 6: Final answer
    x = 109,100.97

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1.5x scale

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.