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Finding the Fourth Proportional to 115,313.30, 172,912.35 and 52,913.30

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Solution

The fourth proportional to 115,313.30, 172,912.35 and 52,913.30 is: 79,343.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,313.30 : 172,912.35 = 52,913.30 : x
  2. Step 2: Convert to fraction form
    115,313.30/172,912.35 = 52,913.30/x
  3. Step 3: Cross multiply
    115,313.30x = 172,912.35 × 52,913.30
  4. Step 4: Simplify right side
    115,313.30x = 9,149,363,049.26
  5. Step 5: Solve for x
    x = 9,149,363,049.26/115,313.30
  6. Step 6: Final answer
    x = 79,343.52

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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.