Home / 85,518.90-117,939.42-71,226.18

Finding the Fourth Proportional to 85,518.90, 117,939.42 and 71,226.18

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Solution

The fourth proportional to 85,518.90, 117,939.42 and 71,226.18 is: 98,228.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,518.90 : 117,939.42 = 71,226.18 : x
  2. Step 2: Convert to fraction form
    85,518.90/117,939.42 = 71,226.18/x
  3. Step 3: Cross multiply
    85,518.90x = 117,939.42 × 71,226.18
  4. Step 4: Simplify right side
    85,518.90x = 8,400,374,358.02
  5. Step 5: Solve for x
    x = 8,400,374,358.02/85,518.90
  6. Step 6: Final answer
    x = 98,228.28

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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.