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Finding the Fourth Proportional to 118,641.12, 177,837.76 and 39,690.48

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Solution

The fourth proportional to 118,641.12, 177,837.76 and 39,690.48 is: 59,494.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,641.12 : 177,837.76 = 39,690.48 : x
  2. Step 2: Convert to fraction form
    118,641.12/177,837.76 = 39,690.48/x
  3. Step 3: Cross multiply
    118,641.12x = 177,837.76 × 39,690.48
  4. Step 4: Simplify right side
    118,641.12x = 7,058,466,056.52
  5. Step 5: Solve for x
    x = 7,058,466,056.52/118,641.12
  6. Step 6: Final answer
    x = 59,494.26

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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.