Home / 85,255.96-117,615.90-81,303.16

Finding the Fourth Proportional to 85,255.96, 117,615.90 and 81,303.16

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Solution

The fourth proportional to 85,255.96, 117,615.90 and 81,303.16 is: 112,162.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,255.96 : 117,615.90 = 81,303.16 : x
  2. Step 2: Convert to fraction form
    85,255.96/117,615.90 = 81,303.16/x
  3. Step 3: Cross multiply
    85,255.96x = 117,615.90 × 81,303.16
  4. Step 4: Simplify right side
    85,255.96x = 9,562,544,336.24
  5. Step 5: Solve for x
    x = 9,562,544,336.24/85,255.96
  6. Step 6: Final answer
    x = 112,162.77

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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.