Home / 258,131.06-387,138.19-98,149.93

Finding the Fourth Proportional to 258,131.06, 387,138.19 and 98,149.93

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Solution

The fourth proportional to 258,131.06, 387,138.19 and 98,149.93 is: 147,202.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,131.06 : 387,138.19 = 98,149.93 : x
  2. Step 2: Convert to fraction form
    258,131.06/387,138.19 = 98,149.93/x
  3. Step 3: Cross multiply
    258,131.06x = 387,138.19 × 98,149.93
  4. Step 4: Simplify right side
    258,131.06x = 37,997,586,248.83
  5. Step 5: Solve for x
    x = 37,997,586,248.83/258,131.06
  6. Step 6: Final answer
    x = 147,202.69

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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.