Home / 109,577.70-151,221.78-61,831.08

Finding the Fourth Proportional to 109,577.70, 151,221.78 and 61,831.08

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Solution

The fourth proportional to 109,577.70, 151,221.78 and 61,831.08 is: 85,329.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,577.70 : 151,221.78 = 61,831.08 : x
  2. Step 2: Convert to fraction form
    109,577.70/151,221.78 = 61,831.08/x
  3. Step 3: Cross multiply
    109,577.70x = 151,221.78 × 61,831.08
  4. Step 4: Simplify right side
    109,577.70x = 9,350,205,976.92
  5. Step 5: Solve for x
    x = 9,350,205,976.92/109,577.70
  6. Step 6: Final answer
    x = 85,329.46

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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.