Home / 98,831.20-136,387.11-53,509.20

Finding the Fourth Proportional to 98,831.20, 136,387.11 and 53,509.20

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Solution

The fourth proportional to 98,831.20, 136,387.11 and 53,509.20 is: 73,842.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,831.20 : 136,387.11 = 53,509.20 : x
  2. Step 2: Convert to fraction form
    98,831.20/136,387.11 = 53,509.20/x
  3. Step 3: Cross multiply
    98,831.20x = 136,387.11 × 53,509.20
  4. Step 4: Simplify right side
    98,831.20x = 7,297,965,146.41
  5. Step 5: Solve for x
    x = 7,297,965,146.41/98,831.20
  6. Step 6: Final answer
    x = 73,842.73

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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.