Home / 113,742.78-156,964.98-63,441.78

Finding the Fourth Proportional to 113,742.78, 156,964.98 and 63,441.78

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Solution

The fourth proportional to 113,742.78, 156,964.98 and 63,441.78 is: 87,549.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,742.78 : 156,964.98 = 63,441.78 : x
  2. Step 2: Convert to fraction form
    113,742.78/156,964.98 = 63,441.78/x
  3. Step 3: Cross multiply
    113,742.78x = 156,964.98 × 63,441.78
  4. Step 4: Simplify right side
    113,742.78x = 9,958,137,728.86
  5. Step 5: Solve for x
    x = 9,958,137,728.86/113,742.78
  6. Step 6: Final answer
    x = 87,549.62

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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.