Home / 118,086.20-177,129.30-99,715.40

Finding the Fourth Proportional to 118,086.20, 177,129.30 and 99,715.40

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Solution

The fourth proportional to 118,086.20, 177,129.30 and 99,715.40 is: 149,573.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,086.20 : 177,129.30 = 99,715.40 : x
  2. Step 2: Convert to fraction form
    118,086.20/177,129.30 = 99,715.40/x
  3. Step 3: Cross multiply
    118,086.20x = 177,129.30 × 99,715.40
  4. Step 4: Simplify right side
    118,086.20x = 17,662,519,001.22
  5. Step 5: Solve for x
    x = 17,662,519,001.22/118,086.20
  6. Step 6: Final answer
    x = 149,573.10

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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.