Home / 155,940.36-215,198.91-86,091.83

Finding the Fourth Proportional to 155,940.36, 215,198.91 and 86,091.83

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Solution

The fourth proportional to 155,940.36, 215,198.91 and 86,091.83 is: 118,807.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,940.36 : 215,198.91 = 86,091.83 : x
  2. Step 2: Convert to fraction form
    155,940.36/215,198.91 = 86,091.83/x
  3. Step 3: Cross multiply
    155,940.36x = 215,198.91 × 86,091.83
  4. Step 4: Simplify right side
    155,940.36x = 18,526,867,975.91
  5. Step 5: Solve for x
    x = 18,526,867,975.91/155,940.36
  6. Step 6: Final answer
    x = 118,807.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.