Home / 118,635.90-178,342.65-83,816.70

Finding the Fourth Proportional to 118,635.90, 178,342.65 and 83,816.70

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Solution

The fourth proportional to 118,635.90, 178,342.65 and 83,816.70 is: 125,999.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,635.90 : 178,342.65 = 83,816.70 : x
  2. Step 2: Convert to fraction form
    118,635.90/178,342.65 = 83,816.70/x
  3. Step 3: Cross multiply
    118,635.90x = 178,342.65 × 83,816.70
  4. Step 4: Simplify right side
    118,635.90x = 14,948,092,392.26
  5. Step 5: Solve for x
    x = 14,948,092,392.26/118,635.90
  6. Step 6: Final answer
    x = 125,999.74

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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.