Home / 104,051.20-143,609.28-61,630.72

Finding the Fourth Proportional to 104,051.20, 143,609.28 and 61,630.72

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Solution

The fourth proportional to 104,051.20, 143,609.28 and 61,630.72 is: 85,061.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,051.20 : 143,609.28 = 61,630.72 : x
  2. Step 2: Convert to fraction form
    104,051.20/143,609.28 = 61,630.72/x
  3. Step 3: Cross multiply
    104,051.20x = 143,609.28 × 61,630.72
  4. Step 4: Simplify right side
    104,051.20x = 8,850,743,325.08
  5. Step 5: Solve for x
    x = 8,850,743,325.08/104,051.20
  6. Step 6: Final answer
    x = 85,061.42

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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.