Home / 134,968.26-186,256.20-78,383.28

Finding the Fourth Proportional to 134,968.26, 186,256.20 and 78,383.28

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Solution

The fourth proportional to 134,968.26, 186,256.20 and 78,383.28 is: 108,168.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,968.26 : 186,256.20 = 78,383.28 : x
  2. Step 2: Convert to fraction form
    134,968.26/186,256.20 = 78,383.28/x
  3. Step 3: Cross multiply
    134,968.26x = 186,256.20 × 78,383.28
  4. Step 4: Simplify right side
    134,968.26x = 14,599,371,484.42
  5. Step 5: Solve for x
    x = 14,599,371,484.42/134,968.26
  6. Step 6: Final answer
    x = 108,168.92

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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.