Home / 136,972.76-189,044.10-83,274.60

Finding the Fourth Proportional to 136,972.76, 189,044.10 and 83,274.60

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Solution

The fourth proportional to 136,972.76, 189,044.10 and 83,274.60 is: 114,932.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,972.76 : 189,044.10 = 83,274.60 : x
  2. Step 2: Convert to fraction form
    136,972.76/189,044.10 = 83,274.60/x
  3. Step 3: Cross multiply
    136,972.76x = 189,044.10 × 83,274.60
  4. Step 4: Simplify right side
    136,972.76x = 15,742,571,809.86
  5. Step 5: Solve for x
    x = 15,742,571,809.86/136,972.76
  6. Step 6: Final answer
    x = 114,932.14

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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.