Home / 115,004.40-172,344.60-91,352.40

Finding the Fourth Proportional to 115,004.40, 172,344.60 and 91,352.40

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Solution

The fourth proportional to 115,004.40, 172,344.60 and 91,352.40 is: 136,899.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,004.40 : 172,344.60 = 91,352.40 : x
  2. Step 2: Convert to fraction form
    115,004.40/172,344.60 = 91,352.40/x
  3. Step 3: Cross multiply
    115,004.40x = 172,344.60 × 91,352.40
  4. Step 4: Simplify right side
    115,004.40x = 15,744,092,837.04
  5. Step 5: Solve for x
    x = 15,744,092,837.04/115,004.40
  6. Step 6: Final answer
    x = 136,899.92

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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.