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Finding the Fourth Proportional to 98,188.90, 135,502.50 and 54,585.55

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Solution

The fourth proportional to 98,188.90, 135,502.50 and 54,585.55 is: 75,329.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,188.90 : 135,502.50 = 54,585.55 : x
  2. Step 2: Convert to fraction form
    98,188.90/135,502.50 = 54,585.55/x
  3. Step 3: Cross multiply
    98,188.90x = 135,502.50 × 54,585.55
  4. Step 4: Simplify right side
    98,188.90x = 7,396,477,640.18
  5. Step 5: Solve for x
    x = 7,396,477,640.18/98,188.90
  6. Step 6: Final answer
    x = 75,329.06

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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.