Home / 118,231.57-163,157.38-64,515.21

Finding the Fourth Proportional to 118,231.57, 163,157.38 and 64,515.21

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Solution

The fourth proportional to 118,231.57, 163,157.38 and 64,515.21 is: 89,029.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,231.57 : 163,157.38 = 64,515.21 : x
  2. Step 2: Convert to fraction form
    118,231.57/163,157.38 = 64,515.21/x
  3. Step 3: Cross multiply
    118,231.57x = 163,157.38 × 64,515.21
  4. Step 4: Simplify right side
    118,231.57x = 10,526,132,633.75
  5. Step 5: Solve for x
    x = 10,526,132,633.75/118,231.57
  6. Step 6: Final answer
    x = 89,029.80

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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.