Home / 134,939.52-186,202.40-78,339.84

Finding the Fourth Proportional to 134,939.52, 186,202.40 and 78,339.84

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Solution

The fourth proportional to 134,939.52, 186,202.40 and 78,339.84 is: 108,100.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,939.52 : 186,202.40 = 78,339.84 : x
  2. Step 2: Convert to fraction form
    134,939.52/186,202.40 = 78,339.84/x
  3. Step 3: Cross multiply
    134,939.52x = 186,202.40 × 78,339.84
  4. Step 4: Simplify right side
    134,939.52x = 14,587,066,223.62
  5. Step 5: Solve for x
    x = 14,587,066,223.62/134,939.52
  6. Step 6: Final answer
    x = 108,100.77

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1.5x scale

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.