Home / 85,188.10-117,450.41-69,818.08

Finding the Fourth Proportional to 85,188.10, 117,450.41 and 69,818.08

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Solution

The fourth proportional to 85,188.10, 117,450.41 and 69,818.08 is: 96,259.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,188.10 : 117,450.41 = 69,818.08 : x
  2. Step 2: Convert to fraction form
    85,188.10/117,450.41 = 69,818.08/x
  3. Step 3: Cross multiply
    85,188.10x = 117,450.41 × 69,818.08
  4. Step 4: Simplify right side
    85,188.10x = 8,200,161,478.70
  5. Step 5: Solve for x
    x = 8,200,161,478.70/85,188.10
  6. Step 6: Final answer
    x = 96,259.47

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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.