Home / 258,129.06-387,135.20-98,147.93

Finding the Fourth Proportional to 258,129.06, 387,135.20 and 98,147.93

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Solution

The fourth proportional to 258,129.06, 387,135.20 and 98,147.93 is: 147,199.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,129.06 : 387,135.20 = 98,147.93 : x
  2. Step 2: Convert to fraction form
    258,129.06/387,135.20 = 98,147.93/x
  3. Step 3: Cross multiply
    258,129.06x = 387,135.20 × 98,147.93
  4. Step 4: Simplify right side
    258,129.06x = 37,996,516,083.72
  5. Step 5: Solve for x
    x = 37,996,516,083.72/258,129.06
  6. Step 6: Final answer
    x = 147,199.68

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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.