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Finding the Fourth Proportional to 143,444.76, 197,950.96 and 79,781.20

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Solution

The fourth proportional to 143,444.76, 197,950.96 and 79,781.20 is: 110,096.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,444.76 : 197,950.96 = 79,781.20 : x
  2. Step 2: Convert to fraction form
    143,444.76/197,950.96 = 79,781.20/x
  3. Step 3: Cross multiply
    143,444.76x = 197,950.96 × 79,781.20
  4. Step 4: Simplify right side
    143,444.76x = 15,792,765,129.95
  5. Step 5: Solve for x
    x = 15,792,765,129.95/143,444.76
  6. Step 6: Final answer
    x = 110,096.49

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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.