Home / 112,842.90-155,652.39-72,608.94

Finding the Fourth Proportional to 112,842.90, 155,652.39 and 72,608.94

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Solution

The fourth proportional to 112,842.90, 155,652.39 and 72,608.94 is: 100,154.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,842.90 : 155,652.39 = 72,608.94 : x
  2. Step 2: Convert to fraction form
    112,842.90/155,652.39 = 72,608.94/x
  3. Step 3: Cross multiply
    112,842.90x = 155,652.39 × 72,608.94
  4. Step 4: Simplify right side
    112,842.90x = 11,301,755,046.37
  5. Step 5: Solve for x
    x = 11,301,755,046.37/112,842.90
  6. Step 6: Final answer
    x = 100,154.77

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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.