Home / 99,897.90-137,868.60-54,582.69

Finding the Fourth Proportional to 99,897.90, 137,868.60 and 54,582.69

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Solution

The fourth proportional to 99,897.90, 137,868.60 and 54,582.69 is: 75,329.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,897.90 : 137,868.60 = 54,582.69 : x
  2. Step 2: Convert to fraction form
    99,897.90/137,868.60 = 54,582.69/x
  3. Step 3: Cross multiply
    99,897.90x = 137,868.60 × 54,582.69
  4. Step 4: Simplify right side
    99,897.90x = 7,525,238,305.93
  5. Step 5: Solve for x
    x = 7,525,238,305.93/99,897.90
  6. Step 6: Final answer
    x = 75,329.29

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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.