Home / 136,733.28-188,691.55-76,303.28

Finding the Fourth Proportional to 136,733.28, 188,691.55 and 76,303.28

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Solution

The fourth proportional to 136,733.28, 188,691.55 and 76,303.28 is: 105,298.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,733.28 : 188,691.55 = 76,303.28 : x
  2. Step 2: Convert to fraction form
    136,733.28/188,691.55 = 76,303.28/x
  3. Step 3: Cross multiply
    136,733.28x = 188,691.55 × 76,303.28
  4. Step 4: Simplify right side
    136,733.28x = 14,397,784,173.28
  5. Step 5: Solve for x
    x = 14,397,784,173.28/136,733.28
  6. Step 6: Final answer
    x = 105,298.32

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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.