Home / 420,112.16-630,165-104,566.96

Finding the Fourth Proportional to 420,112.16, 630,165 and 104,566.96

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Solution

The fourth proportional to 420,112.16, 630,165 and 104,566.96 is: 156,849.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,112.16 : 630,165 = 104,566.96 : x
  2. Step 2: Convert to fraction form
    420,112.16/630,165 = 104,566.96/x
  3. Step 3: Cross multiply
    420,112.16x = 630,165 × 104,566.96
  4. Step 4: Simplify right side
    420,112.16x = 65,894,438,348.40
  5. Step 5: Solve for x
    x = 65,894,438,348.40/420,112.16
  6. Step 6: Final answer
    x = 156,849.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.