Home / 99,691.07-137,568.19-56,664.58

Finding the Fourth Proportional to 99,691.07, 137,568.19 and 56,664.58

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Solution

The fourth proportional to 99,691.07, 137,568.19 and 56,664.58 is: 78,194.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,691.07 : 137,568.19 = 56,664.58 : x
  2. Step 2: Convert to fraction form
    99,691.07/137,568.19 = 56,664.58/x
  3. Step 3: Cross multiply
    99,691.07x = 137,568.19 × 56,664.58
  4. Step 4: Simplify right side
    99,691.07x = 7,795,243,707.71
  5. Step 5: Solve for x
    x = 7,795,243,707.71/99,691.07
  6. Step 6: Final answer
    x = 78,194.00

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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.