Home / 258,053.10-387,002.85-100,190.70

Finding the Fourth Proportional to 258,053.10, 387,002.85 and 100,190.70

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Solution

The fourth proportional to 258,053.10, 387,002.85 and 100,190.70 is: 150,256.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,053.10 : 387,002.85 = 100,190.70 : x
  2. Step 2: Convert to fraction form
    258,053.10/387,002.85 = 100,190.70/x
  3. Step 3: Cross multiply
    258,053.10x = 387,002.85 × 100,190.70
  4. Step 4: Simplify right side
    258,053.10x = 38,774,086,443.50
  5. Step 5: Solve for x
    x = 38,774,086,443.50/258,053.10
  6. Step 6: Final answer
    x = 150,256.23

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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.