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Finding the Fourth Proportional to 118,909.01, 178,393.21 and 83,917.01

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Solution

The fourth proportional to 118,909.01, 178,393.21 and 83,917.01 is: 125,896.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,909.01 : 178,393.21 = 83,917.01 : x
  2. Step 2: Convert to fraction form
    118,909.01/178,393.21 = 83,917.01/x
  3. Step 3: Cross multiply
    118,909.01x = 178,393.21 × 83,917.01
  4. Step 4: Simplify right side
    118,909.01x = 14,970,223,685.74
  5. Step 5: Solve for x
    x = 14,970,223,685.74/118,909.01
  6. Step 6: Final answer
    x = 125,896.47

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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.