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Finding the Fourth Proportional to 144,666.74, 216,793.33 and 81,353.97

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Solution

The fourth proportional to 144,666.74, 216,793.33 and 81,353.97 is: 121,914.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,666.74 : 216,793.33 = 81,353.97 : x
  2. Step 2: Convert to fraction form
    144,666.74/216,793.33 = 81,353.97/x
  3. Step 3: Cross multiply
    144,666.74x = 216,793.33 × 81,353.97
  4. Step 4: Simplify right side
    144,666.74x = 17,636,998,065.02
  5. Step 5: Solve for x
    x = 17,636,998,065.02/144,666.74
  6. Step 6: Final answer
    x = 121,914.67

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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.