Home / 258,532.25-387,973.40-90,054.05

Finding the Fourth Proportional to 258,532.25, 387,973.40 and 90,054.05

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Solution

The fourth proportional to 258,532.25, 387,973.40 and 90,054.05 is: 135,142.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,532.25 : 387,973.40 = 90,054.05 : x
  2. Step 2: Convert to fraction form
    258,532.25/387,973.40 = 90,054.05/x
  3. Step 3: Cross multiply
    258,532.25x = 387,973.40 × 90,054.05
  4. Step 4: Simplify right side
    258,532.25x = 34,938,573,572.13
  5. Step 5: Solve for x
    x = 34,938,573,572.13/258,532.25
  6. Step 6: Final answer
    x = 135,142.03

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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.