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Finding the Fourth Proportional to 118,399.40, 177,541.53 and 39,486.97

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Solution

The fourth proportional to 118,399.40, 177,541.53 and 39,486.97 is: 59,211.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,399.40 : 177,541.53 = 39,486.97 : x
  2. Step 2: Convert to fraction form
    118,399.40/177,541.53 = 39,486.97/x
  3. Step 3: Cross multiply
    118,399.40x = 177,541.53 × 39,486.97
  4. Step 4: Simplify right side
    118,399.40x = 7,010,577,068.86
  5. Step 5: Solve for x
    x = 7,010,577,068.86/118,399.40
  6. Step 6: Final answer
    x = 59,211.26

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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.