Home / 387,979.10-581,993.25-121,750.12

Finding the Fourth Proportional to 387,979.10, 581,993.25 and 121,750.12

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Solution

The fourth proportional to 387,979.10, 581,993.25 and 121,750.12 is: 182,632.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,979.10 : 581,993.25 = 121,750.12 : x
  2. Step 2: Convert to fraction form
    387,979.10/581,993.25 = 121,750.12/x
  3. Step 3: Cross multiply
    387,979.10x = 581,993.25 × 121,750.12
  4. Step 4: Simplify right side
    387,979.10x = 70,857,748,026.69
  5. Step 5: Solve for x
    x = 70,857,748,026.69/387,979.10
  6. Step 6: Final answer
    x = 182,632.90

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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.