Home / 387,979.98-581,994.56-121,751.00

Finding the Fourth Proportional to 387,979.98, 581,994.56 and 121,751.00

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Solution

The fourth proportional to 387,979.98, 581,994.56 and 121,751.00 is: 182,634.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,979.98 : 581,994.56 = 121,751.00 : x
  2. Step 2: Convert to fraction form
    387,979.98/581,994.56 = 121,751.00/x
  3. Step 3: Cross multiply
    387,979.98x = 581,994.56 × 121,751.00
  4. Step 4: Simplify right side
    387,979.98x = 70,858,416,460.21
  5. Step 5: Solve for x
    x = 70,858,416,460.21/387,979.98
  6. Step 6: Final answer
    x = 182,634.21

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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.