Home / 134,831.90-186,105.03-78,261.50

Finding the Fourth Proportional to 134,831.90, 186,105.03 and 78,261.50

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Solution

The fourth proportional to 134,831.90, 186,105.03 and 78,261.50 is: 108,022.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,831.90 : 186,105.03 = 78,261.50 : x
  2. Step 2: Convert to fraction form
    134,831.90/186,105.03 = 78,261.50/x
  3. Step 3: Cross multiply
    134,831.90x = 186,105.03 × 78,261.50
  4. Step 4: Simplify right side
    134,831.90x = 14,564,858,805.35
  5. Step 5: Solve for x
    x = 14,564,858,805.35/134,831.90
  6. Step 6: Final answer
    x = 108,022.35

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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.