Home / 155,971.62-215,240.90-84,351.69

Finding the Fourth Proportional to 155,971.62, 215,240.90 and 84,351.69

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Solution

The fourth proportional to 155,971.62, 215,240.90 and 84,351.69 is: 116,405.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,971.62 : 215,240.90 = 84,351.69 : x
  2. Step 2: Convert to fraction form
    155,971.62/215,240.90 = 84,351.69/x
  3. Step 3: Cross multiply
    155,971.62x = 215,240.90 × 84,351.69
  4. Step 4: Simplify right side
    155,971.62x = 18,155,933,250.36
  5. Step 5: Solve for x
    x = 18,155,933,250.36/155,971.62
  6. Step 6: Final answer
    x = 116,405.36

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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.