Home / 136,929.36-205,342.20-53,778

Finding the Fourth Proportional to 136,929.36, 205,342.20 and 53,778

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Solution

The fourth proportional to 136,929.36, 205,342.20 and 53,778 is: 80,646.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,929.36 : 205,342.20 = 53,778 : x
  2. Step 2: Convert to fraction form
    136,929.36/205,342.20 = 53,778/x
  3. Step 3: Cross multiply
    136,929.36x = 205,342.20 × 53,778
  4. Step 4: Simplify right side
    136,929.36x = 11,042,892,831.60
  5. Step 5: Solve for x
    x = 11,042,892,831.60/136,929.36
  6. Step 6: Final answer
    x = 80,646.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.