Home / 115,863.22-159,904.68-70,567.78

Finding the Fourth Proportional to 115,863.22, 159,904.68 and 70,567.78

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Solution

The fourth proportional to 115,863.22, 159,904.68 and 70,567.78 is: 97,391.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,863.22 : 159,904.68 = 70,567.78 : x
  2. Step 2: Convert to fraction form
    115,863.22/159,904.68 = 70,567.78/x
  3. Step 3: Cross multiply
    115,863.22x = 159,904.68 × 70,567.78
  4. Step 4: Simplify right side
    115,863.22x = 11,284,118,279.21
  5. Step 5: Solve for x
    x = 11,284,118,279.21/115,863.22
  6. Step 6: Final answer
    x = 97,391.72

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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.