Home / 99,145.30-136,806.07-56,695.63

Finding the Fourth Proportional to 99,145.30, 136,806.07 and 56,695.63

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Solution

The fourth proportional to 99,145.30, 136,806.07 and 56,695.63 is: 78,231.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,145.30 : 136,806.07 = 56,695.63 : x
  2. Step 2: Convert to fraction form
    99,145.30/136,806.07 = 56,695.63/x
  3. Step 3: Cross multiply
    99,145.30x = 136,806.07 × 56,695.63
  4. Step 4: Simplify right side
    99,145.30x = 7,756,305,642.44
  5. Step 5: Solve for x
    x = 7,756,305,642.44/99,145.30
  6. Step 6: Final answer
    x = 78,231.71

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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.