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Finding the Fourth Proportional to 113,879.90, 170,815.80 and 51,550.40

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Solution

The fourth proportional to 113,879.90, 170,815.80 and 51,550.40 is: 77,323.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,879.90 : 170,815.80 = 51,550.40 : x
  2. Step 2: Convert to fraction form
    113,879.90/170,815.80 = 51,550.40/x
  3. Step 3: Cross multiply
    113,879.90x = 170,815.80 × 51,550.40
  4. Step 4: Simplify right side
    113,879.90x = 8,805,622,816.32
  5. Step 5: Solve for x
    x = 8,805,622,816.32/113,879.90
  6. Step 6: Final answer
    x = 77,323.77

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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.