Home / 155,876.36-215,109.33-84,256.34

Finding the Fourth Proportional to 155,876.36, 215,109.33 and 84,256.34

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Solution

The fourth proportional to 155,876.36, 215,109.33 and 84,256.34 is: 116,273.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,876.36 : 215,109.33 = 84,256.34 : x
  2. Step 2: Convert to fraction form
    155,876.36/215,109.33 = 84,256.34/x
  3. Step 3: Cross multiply
    155,876.36x = 215,109.33 × 84,256.34
  4. Step 4: Simplify right side
    155,876.36x = 18,124,324,845.65
  5. Step 5: Solve for x
    x = 18,124,324,845.65/155,876.36
  6. Step 6: Final answer
    x = 116,273.72

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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.