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Finding the Fourth Proportional to 119,721, 179,582.40 and 53,143.24

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Solution

The fourth proportional to 119,721, 179,582.40 and 53,143.24 is: 79,715.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,721 : 179,582.40 = 53,143.24 : x
  2. Step 2: Convert to fraction form
    119,721/179,582.40 = 53,143.24/x
  3. Step 3: Cross multiply
    119,721x = 179,582.40 × 53,143.24
  4. Step 4: Simplify right side
    119,721x = 9,543,590,582.98
  5. Step 5: Solve for x
    x = 9,543,590,582.98/119,721
  6. Step 6: Final answer
    x = 79,715.26

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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.