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Finding the Fourth Proportional to 102,052.92, 140,940.63 and 90,921.12

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Solution

The fourth proportional to 102,052.92, 140,940.63 and 90,921.12 is: 125,567.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,052.92 : 140,940.63 = 90,921.12 : x
  2. Step 2: Convert to fraction form
    102,052.92/140,940.63 = 90,921.12/x
  3. Step 3: Cross multiply
    102,052.92x = 140,940.63 × 90,921.12
  4. Step 4: Simplify right side
    102,052.92x = 12,814,479,933.11
  5. Step 5: Solve for x
    x = 12,814,479,933.11/102,052.92
  6. Step 6: Final answer
    x = 125,567.01

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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.