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Finding the Fourth Proportional to 145,641.67, 218,484.03 and 74,604.49

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Solution

The fourth proportional to 145,641.67, 218,484.03 and 74,604.49 is: 111,917.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,641.67 : 218,484.03 = 74,604.49 : x
  2. Step 2: Convert to fraction form
    145,641.67/218,484.03 = 74,604.49/x
  3. Step 3: Cross multiply
    145,641.67x = 218,484.03 × 74,604.49
  4. Step 4: Simplify right side
    145,641.67x = 16,299,890,593.82
  5. Step 5: Solve for x
    x = 16,299,890,593.82/145,641.67
  6. Step 6: Final answer
    x = 111,917.77

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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.