Home / 118,979.14-164,219.94-80,802.40

Finding the Fourth Proportional to 118,979.14, 164,219.94 and 80,802.40

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Solution

The fourth proportional to 118,979.14, 164,219.94 and 80,802.40 is: 111,526.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,979.14 : 164,219.94 = 80,802.40 : x
  2. Step 2: Convert to fraction form
    118,979.14/164,219.94 = 80,802.40/x
  3. Step 3: Cross multiply
    118,979.14x = 164,219.94 × 80,802.40
  4. Step 4: Simplify right side
    118,979.14x = 13,269,365,279.86
  5. Step 5: Solve for x
    x = 13,269,365,279.86/118,979.14
  6. Step 6: Final answer
    x = 111,526.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.