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Finding the Fourth Proportional to 118,570.60, 177,865.26 and 39,685.12

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Solution

The fourth proportional to 118,570.60, 177,865.26 and 39,685.12 is: 59,530.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,570.60 : 177,865.26 = 39,685.12 : x
  2. Step 2: Convert to fraction form
    118,570.60/177,865.26 = 39,685.12/x
  3. Step 3: Cross multiply
    118,570.60x = 177,865.26 × 39,685.12
  4. Step 4: Simplify right side
    118,570.60x = 7,058,604,186.93
  5. Step 5: Solve for x
    x = 7,058,604,186.93/118,570.60
  6. Step 6: Final answer
    x = 59,530.81

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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.