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Finding the Fourth Proportional to 118,116.70, 177,061.65 and 39,190.30

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Solution

The fourth proportional to 118,116.70, 177,061.65 and 39,190.30 is: 58,747.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,116.70 : 177,061.65 = 39,190.30 : x
  2. Step 2: Convert to fraction form
    118,116.70/177,061.65 = 39,190.30/x
  3. Step 3: Cross multiply
    118,116.70x = 177,061.65 × 39,190.30
  4. Step 4: Simplify right side
    118,116.70x = 6,939,099,182.00
  5. Step 5: Solve for x
    x = 6,939,099,182.00/118,116.70
  6. Step 6: Final answer
    x = 58,747.82

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1.5x scale

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.