Home / 245,387.36-368,081.18-76,920.80

Finding the Fourth Proportional to 245,387.36, 368,081.18 and 76,920.80

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Solution

The fourth proportional to 245,387.36, 368,081.18 and 76,920.80 is: 115,381.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,387.36 : 368,081.18 = 76,920.80 : x
  2. Step 2: Convert to fraction form
    245,387.36/368,081.18 = 76,920.80/x
  3. Step 3: Cross multiply
    245,387.36x = 368,081.18 × 76,920.80
  4. Step 4: Simplify right side
    245,387.36x = 28,313,098,830.54
  5. Step 5: Solve for x
    x = 28,313,098,830.54/245,387.36
  6. Step 6: Final answer
    x = 115,381.24

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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.