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Finding the Fourth Proportional to 143,445.67, 197,955 and 79,782.10

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Solution

The fourth proportional to 143,445.67, 197,955 and 79,782.10 is: 110,099.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,445.67 : 197,955 = 79,782.10 : x
  2. Step 2: Convert to fraction form
    143,445.67/197,955 = 79,782.10/x
  3. Step 3: Cross multiply
    143,445.67x = 197,955 × 79,782.10
  4. Step 4: Simplify right side
    143,445.67x = 15,793,265,110.61
  5. Step 5: Solve for x
    x = 15,793,265,110.61/143,445.67
  6. Step 6: Final answer
    x = 110,099.28

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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.