Home / 185,640.40-278,460.60-45,397.20

Finding the Fourth Proportional to 185,640.40, 278,460.60 and 45,397.20

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Solution

The fourth proportional to 185,640.40, 278,460.60 and 45,397.20 is: 68,095.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,640.40 : 278,460.60 = 45,397.20 : x
  2. Step 2: Convert to fraction form
    185,640.40/278,460.60 = 45,397.20/x
  3. Step 3: Cross multiply
    185,640.40x = 278,460.60 × 45,397.20
  4. Step 4: Simplify right side
    185,640.40x = 12,641,331,550.32
  5. Step 5: Solve for x
    x = 12,641,331,550.32/185,640.40
  6. Step 6: Final answer
    x = 68,095.80

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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.