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Finding the Fourth Proportional to 98,223.71, 135,513.14 and 64,251.54

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Solution

The fourth proportional to 98,223.71, 135,513.14 and 64,251.54 is: 88,643.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,223.71 : 135,513.14 = 64,251.54 : x
  2. Step 2: Convert to fraction form
    98,223.71/135,513.14 = 64,251.54/x
  3. Step 3: Cross multiply
    98,223.71x = 135,513.14 × 64,251.54
  4. Step 4: Simplify right side
    98,223.71x = 8,706,927,613.98
  5. Step 5: Solve for x
    x = 8,706,927,613.98/98,223.71
  6. Step 6: Final answer
    x = 88,643.85

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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.