Home / 98,689.06-136,190.66-55,668.42

Finding the Fourth Proportional to 98,689.06, 136,190.66 and 55,668.42

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Solution

The fourth proportional to 98,689.06, 136,190.66 and 55,668.42 is: 76,822.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,689.06 : 136,190.66 = 55,668.42 : x
  2. Step 2: Convert to fraction form
    98,689.06/136,190.66 = 55,668.42/x
  3. Step 3: Cross multiply
    98,689.06x = 136,190.66 × 55,668.42
  4. Step 4: Simplify right side
    98,689.06x = 7,581,518,860.96
  5. Step 5: Solve for x
    x = 7,581,518,860.96/98,689.06
  6. Step 6: Final answer
    x = 76,822.28

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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.