Home / 136,276.28-188,047.28-78,934.22

Finding the Fourth Proportional to 136,276.28, 188,047.28 and 78,934.22

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Solution

The fourth proportional to 136,276.28, 188,047.28 and 78,934.22 is: 108,921.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,276.28 : 188,047.28 = 78,934.22 : x
  2. Step 2: Convert to fraction form
    136,276.28/188,047.28 = 78,934.22/x
  3. Step 3: Cross multiply
    136,276.28x = 188,047.28 × 78,934.22
  4. Step 4: Simplify right side
    136,276.28x = 14,843,364,035.01
  5. Step 5: Solve for x
    x = 14,843,364,035.01/136,276.28
  6. Step 6: Final answer
    x = 108,921.12

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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.