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Finding the Fourth Proportional to 173,865.60, 260,836.20 and 99,021.60

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Solution

The fourth proportional to 173,865.60, 260,836.20 and 99,021.60 is: 148,553.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,865.60 : 260,836.20 = 99,021.60 : x
  2. Step 2: Convert to fraction form
    173,865.60/260,836.20 = 99,021.60/x
  3. Step 3: Cross multiply
    173,865.60x = 260,836.20 × 99,021.60
  4. Step 4: Simplify right side
    173,865.60x = 25,828,417,861.92
  5. Step 5: Solve for x
    x = 25,828,417,861.92/173,865.60
  6. Step 6: Final answer
    x = 148,553.93

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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.