Home / 134,975.91-186,221.66-87,289.59

Finding the Fourth Proportional to 134,975.91, 186,221.66 and 87,289.59

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Solution

The fourth proportional to 134,975.91, 186,221.66 and 87,289.59 is: 120,430.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,975.91 : 186,221.66 = 87,289.59 : x
  2. Step 2: Convert to fraction form
    134,975.91/186,221.66 = 87,289.59/x
  3. Step 3: Cross multiply
    134,975.91x = 186,221.66 × 87,289.59
  4. Step 4: Simplify right side
    134,975.91x = 16,255,211,914.07
  5. Step 5: Solve for x
    x = 16,255,211,914.07/134,975.91
  6. Step 6: Final answer
    x = 120,430.47

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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.