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Finding the Fourth Proportional to 133,041.32, 183,595.38 and 72,612.92

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Solution

The fourth proportional to 133,041.32, 183,595.38 and 72,612.92 is: 100,204.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,041.32 : 183,595.38 = 72,612.92 : x
  2. Step 2: Convert to fraction form
    133,041.32/183,595.38 = 72,612.92/x
  3. Step 3: Cross multiply
    133,041.32x = 183,595.38 × 72,612.92
  4. Step 4: Simplify right side
    133,041.32x = 13,331,396,640.31
  5. Step 5: Solve for x
    x = 13,331,396,640.31/133,041.32
  6. Step 6: Final answer
    x = 100,204.93

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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.