Home / 115,734.24-159,707.16-65,430

Finding the Fourth Proportional to 115,734.24, 159,707.16 and 65,430

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Solution

The fourth proportional to 115,734.24, 159,707.16 and 65,430 is: 90,289.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,734.24 : 159,707.16 = 65,430 : x
  2. Step 2: Convert to fraction form
    115,734.24/159,707.16 = 65,430/x
  3. Step 3: Cross multiply
    115,734.24x = 159,707.16 × 65,430
  4. Step 4: Simplify right side
    115,734.24x = 10,449,639,478.80
  5. Step 5: Solve for x
    x = 10,449,639,478.80/115,734.24
  6. Step 6: Final answer
    x = 90,289.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.