Home / 134,976.16-186,222-87,289.84

Finding the Fourth Proportional to 134,976.16, 186,222 and 87,289.84

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Solution

The fourth proportional to 134,976.16, 186,222 and 87,289.84 is: 120,430.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,976.16 : 186,222 = 87,289.84 : x
  2. Step 2: Convert to fraction form
    134,976.16/186,222 = 87,289.84/x
  3. Step 3: Cross multiply
    134,976.16x = 186,222 × 87,289.84
  4. Step 4: Simplify right side
    134,976.16x = 16,255,288,584.48
  5. Step 5: Solve for x
    x = 16,255,288,584.48/134,976.16
  6. Step 6: Final answer
    x = 120,430.81

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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.