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Finding the Fourth Proportional to 114,480.60, 157,992.70 and 63,509.78

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Solution

The fourth proportional to 114,480.60, 157,992.70 and 63,509.78 is: 87,648.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,480.60 : 157,992.70 = 63,509.78 : x
  2. Step 2: Convert to fraction form
    114,480.60/157,992.70 = 63,509.78/x
  3. Step 3: Cross multiply
    114,480.60x = 157,992.70 × 63,509.78
  4. Step 4: Simplify right side
    114,480.60x = 10,034,081,618.61
  5. Step 5: Solve for x
    x = 10,034,081,618.61/114,480.60
  6. Step 6: Final answer
    x = 87,648.75

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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.