Home / 99,229.31-136,939.07-56,801.51

Finding the Fourth Proportional to 99,229.31, 136,939.07 and 56,801.51

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Solution

The fourth proportional to 99,229.31, 136,939.07 and 56,801.51 is: 78,387.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,229.31 : 136,939.07 = 56,801.51 : x
  2. Step 2: Convert to fraction form
    99,229.31/136,939.07 = 56,801.51/x
  3. Step 3: Cross multiply
    99,229.31x = 136,939.07 × 56,801.51
  4. Step 4: Simplify right side
    99,229.31x = 7,778,345,954.00
  5. Step 5: Solve for x
    x = 7,778,345,954.00/99,229.31
  6. Step 6: Final answer
    x = 78,387.58

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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.