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Finding the Fourth Proportional to 133,086.28, 183,652.68 and 75,720.28

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Solution

The fourth proportional to 133,086.28, 183,652.68 and 75,720.28 is: 104,490.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,086.28 : 183,652.68 = 75,720.28 : x
  2. Step 2: Convert to fraction form
    133,086.28/183,652.68 = 75,720.28/x
  3. Step 3: Cross multiply
    133,086.28x = 183,652.68 × 75,720.28
  4. Step 4: Simplify right side
    133,086.28x = 13,906,232,352.35
  5. Step 5: Solve for x
    x = 13,906,232,352.35/133,086.28
  6. Step 6: Final answer
    x = 104,490.35

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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.