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Finding the Fourth Proportional to 133,688.52, 200,538.72 and 74,479.32

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Solution

The fourth proportional to 133,688.52, 200,538.72 and 74,479.32 is: 111,722.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,688.52 : 200,538.72 = 74,479.32 : x
  2. Step 2: Convert to fraction form
    133,688.52/200,538.72 = 74,479.32/x
  3. Step 3: Cross multiply
    133,688.52x = 200,538.72 × 74,479.32
  4. Step 4: Simplify right side
    133,688.52x = 14,935,987,499.27
  5. Step 5: Solve for x
    x = 14,935,987,499.27/133,688.52
  6. Step 6: Final answer
    x = 111,722.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.