Home / 136,392.72-188,214.61-75,136.90

Finding the Fourth Proportional to 136,392.72, 188,214.61 and 75,136.90

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Solution

The fourth proportional to 136,392.72, 188,214.61 and 75,136.90 is: 103,684.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,392.72 : 188,214.61 = 75,136.90 : x
  2. Step 2: Convert to fraction form
    136,392.72/188,214.61 = 75,136.90/x
  3. Step 3: Cross multiply
    136,392.72x = 188,214.61 × 75,136.90
  4. Step 4: Simplify right side
    136,392.72x = 14,141,862,330.11
  5. Step 5: Solve for x
    x = 14,141,862,330.11/136,392.72
  6. Step 6: Final answer
    x = 103,684.88

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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.