Home / 133,218.58-183,841.36-72,789.65

Finding the Fourth Proportional to 133,218.58, 183,841.36 and 72,789.65

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Solution

The fourth proportional to 133,218.58, 183,841.36 and 72,789.65 is: 100,449.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,218.58 : 183,841.36 = 72,789.65 : x
  2. Step 2: Convert to fraction form
    133,218.58/183,841.36 = 72,789.65/x
  3. Step 3: Cross multiply
    133,218.58x = 183,841.36 × 72,789.65
  4. Step 4: Simplify right side
    133,218.58x = 13,381,748,872.26
  5. Step 5: Solve for x
    x = 13,381,748,872.26/133,218.58
  6. Step 6: Final answer
    x = 100,449.57

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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.