Home / 99,412.61-137,193.18-56,979.33

Finding the Fourth Proportional to 99,412.61, 137,193.18 and 56,979.33

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Solution

The fourth proportional to 99,412.61, 137,193.18 and 56,979.33 is: 78,633.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,412.61 : 137,193.18 = 56,979.33 : x
  2. Step 2: Convert to fraction form
    99,412.61/137,193.18 = 56,979.33/x
  3. Step 3: Cross multiply
    99,412.61x = 137,193.18 × 56,979.33
  4. Step 4: Simplify right side
    99,412.61x = 7,817,175,476.97
  5. Step 5: Solve for x
    x = 7,817,175,476.97/99,412.61
  6. Step 6: Final answer
    x = 78,633.64

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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.