Home / 209,795.72-314,724.54-76,644.86

Finding the Fourth Proportional to 209,795.72, 314,724.54 and 76,644.86

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Solution

The fourth proportional to 209,795.72, 314,724.54 and 76,644.86 is: 114,978.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,795.72 : 314,724.54 = 76,644.86 : x
  2. Step 2: Convert to fraction form
    209,795.72/314,724.54 = 76,644.86/x
  3. Step 3: Cross multiply
    209,795.72x = 314,724.54 × 76,644.86
  4. Step 4: Simplify right side
    209,795.72x = 24,122,018,306.86
  5. Step 5: Solve for x
    x = 24,122,018,306.86/209,795.72
  6. Step 6: Final answer
    x = 114,978.60

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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.