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Finding the Fourth Proportional to 133,141.68, 183,736.98 and 72,714.09

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Solution

The fourth proportional to 133,141.68, 183,736.98 and 72,714.09 is: 100,346.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,141.68 : 183,736.98 = 72,714.09 : x
  2. Step 2: Convert to fraction form
    133,141.68/183,736.98 = 72,714.09/x
  3. Step 3: Cross multiply
    133,141.68x = 183,736.98 × 72,714.09
  4. Step 4: Simplify right side
    133,141.68x = 13,360,267,300.05
  5. Step 5: Solve for x
    x = 13,360,267,300.05/133,141.68
  6. Step 6: Final answer
    x = 100,346.24

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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.