Home / 122,719.45-169,382.91-75,012.79

Finding the Fourth Proportional to 122,719.45, 169,382.91 and 75,012.79

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Solution

The fourth proportional to 122,719.45, 169,382.91 and 75,012.79 is: 103,536.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,719.45 : 169,382.91 = 75,012.79 : x
  2. Step 2: Convert to fraction form
    122,719.45/169,382.91 = 75,012.79/x
  3. Step 3: Cross multiply
    122,719.45x = 169,382.91 × 75,012.79
  4. Step 4: Simplify right side
    122,719.45x = 12,705,884,657.42
  5. Step 5: Solve for x
    x = 12,705,884,657.42/122,719.45
  6. Step 6: Final answer
    x = 103,536.03

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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.