Home / 188,128,670.40-282,083,174.46-72,978,658.92

Finding the Fourth Proportional to 188,128,670.40, 282,083,174.46 and 72,978,658.92

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Solution

The fourth proportional to 188,128,670.40, 282,083,174.46 and 72,978,658.92 is: 109,425,382.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,128,670.40 : 282,083,174.46 = 72,978,658.92 : x
  2. Step 2: Convert to fraction form
    188,128,670.40/282,083,174.46 = 72,978,658.92/x
  3. Step 3: Cross multiply
    188,128,670.40x = 282,083,174.46 × 72,978,658.92
  4. Step 4: Simplify right side
    188,128,670.40x = 20,586,051,775,987,196
  5. Step 5: Solve for x
    x = 20,586,051,775,987,196/188,128,670.40
  6. Step 6: Final answer
    x = 109,425,382.81

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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.