Home / 115,746.55-159,729.38-65,447.35

Finding the Fourth Proportional to 115,746.55, 159,729.38 and 65,447.35

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Solution

The fourth proportional to 115,746.55, 159,729.38 and 65,447.35 is: 90,316.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,746.55 : 159,729.38 = 65,447.35 : x
  2. Step 2: Convert to fraction form
    115,746.55/159,729.38 = 65,447.35/x
  3. Step 3: Cross multiply
    115,746.55x = 159,729.38 × 65,447.35
  4. Step 4: Simplify right side
    115,746.55x = 10,453,864,310.91
  5. Step 5: Solve for x
    x = 10,453,864,310.91/115,746.55
  6. Step 6: Final answer
    x = 90,316.85

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1.5x scale

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.