Home / 115,423.80-159,257.79-70,100.52

Finding the Fourth Proportional to 115,423.80, 159,257.79 and 70,100.52

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Solution

The fourth proportional to 115,423.80, 159,257.79 and 70,100.52 is: 96,722.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,423.80 : 159,257.79 = 70,100.52 : x
  2. Step 2: Convert to fraction form
    115,423.80/159,257.79 = 70,100.52/x
  3. Step 3: Cross multiply
    115,423.80x = 159,257.79 × 70,100.52
  4. Step 4: Simplify right side
    115,423.80x = 11,164,053,893.05
  5. Step 5: Solve for x
    x = 11,164,053,893.05/115,423.80
  6. Step 6: Final answer
    x = 96,722.29

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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.