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Finding the Fourth Proportional to 155,424.80, 233,233.20 and 61,920.80

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Solution

The fourth proportional to 155,424.80, 233,233.20 and 61,920.80 is: 92,919.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,424.80 : 233,233.20 = 61,920.80 : x
  2. Step 2: Convert to fraction form
    155,424.80/233,233.20 = 61,920.80/x
  3. Step 3: Cross multiply
    155,424.80x = 233,233.20 × 61,920.80
  4. Step 4: Simplify right side
    155,424.80x = 14,441,986,330.56
  5. Step 5: Solve for x
    x = 14,441,986,330.56/155,424.80
  6. Step 6: Final answer
    x = 92,919.45

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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.