Home / 98,743.50-136,265.88-53,421.38

Finding the Fourth Proportional to 98,743.50, 136,265.88 and 53,421.38

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Solution

The fourth proportional to 98,743.50, 136,265.88 and 53,421.38 is: 73,721.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,743.50 : 136,265.88 = 53,421.38 : x
  2. Step 2: Convert to fraction form
    98,743.50/136,265.88 = 53,421.38/x
  3. Step 3: Cross multiply
    98,743.50x = 136,265.88 × 53,421.38
  4. Step 4: Simplify right side
    98,743.50x = 7,279,511,089.41
  5. Step 5: Solve for x
    x = 7,279,511,089.41/98,743.50
  6. Step 6: Final answer
    x = 73,721.42

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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.