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Finding the Fourth Proportional to 133,116.92, 183,698.90 and 72,685.92

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Solution

The fourth proportional to 133,116.92, 183,698.90 and 72,685.92 is: 100,305.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,116.92 : 183,698.90 = 72,685.92 : x
  2. Step 2: Convert to fraction form
    133,116.92/183,698.90 = 72,685.92/x
  3. Step 3: Cross multiply
    133,116.92x = 183,698.90 × 72,685.92
  4. Step 4: Simplify right side
    133,116.92x = 13,352,323,549.49
  5. Step 5: Solve for x
    x = 13,352,323,549.49/133,116.92
  6. Step 6: Final answer
    x = 100,305.23

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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.