Home / 161,979.49-243,043.07-83,149.12

Finding the Fourth Proportional to 161,979.49, 243,043.07 and 83,149.12

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Solution

The fourth proportional to 161,979.49, 243,043.07 and 83,149.12 is: 124,761.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,979.49 : 243,043.07 = 83,149.12 : x
  2. Step 2: Convert to fraction form
    161,979.49/243,043.07 = 83,149.12/x
  3. Step 3: Cross multiply
    161,979.49x = 243,043.07 × 83,149.12
  4. Step 4: Simplify right side
    161,979.49x = 20,208,817,392.60
  5. Step 5: Solve for x
    x = 20,208,817,392.60/161,979.49
  6. Step 6: Final answer
    x = 124,761.58

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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.