Home / 99,531.69-137,353.73-54,819.69

Finding the Fourth Proportional to 99,531.69, 137,353.73 and 54,819.69

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Solution

The fourth proportional to 99,531.69, 137,353.73 and 54,819.69 is: 75,651.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,531.69 : 137,353.73 = 54,819.69 : x
  2. Step 2: Convert to fraction form
    99,531.69/137,353.73 = 54,819.69/x
  3. Step 3: Cross multiply
    99,531.69x = 137,353.73 × 54,819.69
  4. Step 4: Simplify right side
    99,531.69x = 7,529,688,898.94
  5. Step 5: Solve for x
    x = 7,529,688,898.94/99,531.69
  6. Step 6: Final answer
    x = 75,651.17

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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.