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Finding the Fourth Proportional to 155,523.96, 214,629.88 and 87,545.32

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Solution

The fourth proportional to 155,523.96, 214,629.88 and 87,545.32 is: 120,816.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,523.96 : 214,629.88 = 87,545.32 : x
  2. Step 2: Convert to fraction form
    155,523.96/214,629.88 = 87,545.32/x
  3. Step 3: Cross multiply
    155,523.96x = 214,629.88 × 87,545.32
  4. Step 4: Simplify right side
    155,523.96x = 18,789,841,526.16
  5. Step 5: Solve for x
    x = 18,789,841,526.16/155,523.96
  6. Step 6: Final answer
    x = 120,816.38

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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.