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Finding the Fourth Proportional to 118,474.29, 177,720.62 and 39,588.80

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Solution

The fourth proportional to 118,474.29, 177,720.62 and 39,588.80 is: 59,386.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,474.29 : 177,720.62 = 39,588.80 : x
  2. Step 2: Convert to fraction form
    118,474.29/177,720.62 = 39,588.80/x
  3. Step 3: Cross multiply
    118,474.29x = 177,720.62 × 39,588.80
  4. Step 4: Simplify right side
    118,474.29x = 7,035,746,081.06
  5. Step 5: Solve for x
    x = 7,035,746,081.06/118,474.29
  6. Step 6: Final answer
    x = 59,386.27

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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.