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Finding the Fourth Proportional to 133,357.98, 183,947.31 and 85,535.58

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Solution

The fourth proportional to 133,357.98, 183,947.31 and 85,535.58 is: 117,983.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,357.98 : 183,947.31 = 85,535.58 : x
  2. Step 2: Convert to fraction form
    133,357.98/183,947.31 = 85,535.58/x
  3. Step 3: Cross multiply
    133,357.98x = 183,947.31 × 85,535.58
  4. Step 4: Simplify right side
    133,357.98x = 15,734,039,850.29
  5. Step 5: Solve for x
    x = 15,734,039,850.29/133,357.98
  6. Step 6: Final answer
    x = 117,983.49

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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.