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Finding the Fourth Proportional to 115,320.80, 172,923.60 and 52,920.80

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Solution

The fourth proportional to 115,320.80, 172,923.60 and 52,920.80 is: 79,354.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,320.80 : 172,923.60 = 52,920.80 : x
  2. Step 2: Convert to fraction form
    115,320.80/172,923.60 = 52,920.80/x
  3. Step 3: Cross multiply
    115,320.80x = 172,923.60 × 52,920.80
  4. Step 4: Simplify right side
    115,320.80x = 9,151,255,250.88
  5. Step 5: Solve for x
    x = 9,151,255,250.88/115,320.80
  6. Step 6: Final answer
    x = 79,354.77

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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.