Home / 258,781.95-387,942.08-100,973.70

Finding the Fourth Proportional to 258,781.95, 387,942.08 and 100,973.70

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Solution

The fourth proportional to 258,781.95, 387,942.08 and 100,973.70 is: 151,370.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,781.95 : 387,942.08 = 100,973.70 : x
  2. Step 2: Convert to fraction form
    258,781.95/387,942.08 = 100,973.70/x
  3. Step 3: Cross multiply
    258,781.95x = 387,942.08 × 100,973.70
  4. Step 4: Simplify right side
    258,781.95x = 39,171,946,698.43
  5. Step 5: Solve for x
    x = 39,171,946,698.43/258,781.95
  6. Step 6: Final answer
    x = 151,370.48

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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.