Home / 136,621.91-188,538.41-75,366.72

Finding the Fourth Proportional to 136,621.91, 188,538.41 and 75,366.72

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Solution

The fourth proportional to 136,621.91, 188,538.41 and 75,366.72 is: 104,006.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,621.91 : 188,538.41 = 75,366.72 : x
  2. Step 2: Convert to fraction form
    136,621.91/188,538.41 = 75,366.72/x
  3. Step 3: Cross multiply
    136,621.91x = 188,538.41 × 75,366.72
  4. Step 4: Simplify right side
    136,621.91x = 14,209,521,744.13
  5. Step 5: Solve for x
    x = 14,209,521,744.13/136,621.91
  6. Step 6: Final answer
    x = 104,006.17

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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.