Home / 99,764.96-137,699.21-57,348.10

Finding the Fourth Proportional to 99,764.96, 137,699.21 and 57,348.10

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Solution

The fourth proportional to 99,764.96, 137,699.21 and 57,348.10 is: 79,153.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,764.96 : 137,699.21 = 57,348.10 : x
  2. Step 2: Convert to fraction form
    99,764.96/137,699.21 = 57,348.10/x
  3. Step 3: Cross multiply
    99,764.96x = 137,699.21 × 57,348.10
  4. Step 4: Simplify right side
    99,764.96x = 7,896,787,089.76
  5. Step 5: Solve for x
    x = 7,896,787,089.76/99,764.96
  6. Step 6: Final answer
    x = 79,153.91

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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.