Home / 128,569.65-192,817.23-38,608.72

Finding the Fourth Proportional to 128,569.65, 192,817.23 and 38,608.72

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Solution

The fourth proportional to 128,569.65, 192,817.23 and 38,608.72 is: 57,901.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,569.65 : 192,817.23 = 38,608.72 : x
  2. Step 2: Convert to fraction form
    128,569.65/192,817.23 = 38,608.72/x
  3. Step 3: Cross multiply
    128,569.65x = 192,817.23 × 38,608.72
  4. Step 4: Simplify right side
    128,569.65x = 7,444,425,817.42
  5. Step 5: Solve for x
    x = 7,444,425,817.42/128,569.65
  6. Step 6: Final answer
    x = 57,901.89

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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.