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Finding the Fourth Proportional to 118,503.72, 177,765.03 and 39,618.36

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Solution

The fourth proportional to 118,503.72, 177,765.03 and 39,618.36 is: 59,430.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,503.72 : 177,765.03 = 39,618.36 : x
  2. Step 2: Convert to fraction form
    118,503.72/177,765.03 = 39,618.36/x
  3. Step 3: Cross multiply
    118,503.72x = 177,765.03 × 39,618.36
  4. Step 4: Simplify right side
    118,503.72x = 7,042,758,953.95
  5. Step 5: Solve for x
    x = 7,042,758,953.95/118,503.72
  6. Step 6: Final answer
    x = 59,430.70

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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.