Home / 387,342.48-581,014.18-121,104.39

Finding the Fourth Proportional to 387,342.48, 581,014.18 and 121,104.39

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Solution

The fourth proportional to 387,342.48, 581,014.18 and 121,104.39 is: 181,656.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,342.48 : 581,014.18 = 121,104.39 : x
  2. Step 2: Convert to fraction form
    387,342.48/581,014.18 = 121,104.39/x
  3. Step 3: Cross multiply
    387,342.48x = 581,014.18 × 121,104.39
  4. Step 4: Simplify right side
    387,342.48x = 70,363,367,850.25
  5. Step 5: Solve for x
    x = 70,363,367,850.25/387,342.48
  6. Step 6: Final answer
    x = 181,656.73

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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.