Home / 120,816.66-181,188-57,603.45

Finding the Fourth Proportional to 120,816.66, 181,188 and 57,603.45

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Solution

The fourth proportional to 120,816.66, 181,188 and 57,603.45 is: 86,387.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,816.66 : 181,188 = 57,603.45 : x
  2. Step 2: Convert to fraction form
    120,816.66/181,188 = 57,603.45/x
  3. Step 3: Cross multiply
    120,816.66x = 181,188 × 57,603.45
  4. Step 4: Simplify right side
    120,816.66x = 10,437,053,898.60
  5. Step 5: Solve for x
    x = 10,437,053,898.60/120,816.66
  6. Step 6: Final answer
    x = 86,387.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.