Home / 258,081.10-387,063.60-108,490.30

Finding the Fourth Proportional to 258,081.10, 387,063.60 and 108,490.30

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Solution

The fourth proportional to 258,081.10, 387,063.60 and 108,490.30 is: 162,711.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,081.10 : 387,063.60 = 108,490.30 : x
  2. Step 2: Convert to fraction form
    258,081.10/387,063.60 = 108,490.30/x
  3. Step 3: Cross multiply
    258,081.10x = 387,063.60 × 108,490.30
  4. Step 4: Simplify right side
    258,081.10x = 41,992,646,083.08
  5. Step 5: Solve for x
    x = 41,992,646,083.08/258,081.10
  6. Step 6: Final answer
    x = 162,711.05

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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.