Home / 100,121.76-150,016.32-70,477.29

Finding the Fourth Proportional to 100,121.76, 150,016.32 and 70,477.29

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Solution

The fourth proportional to 100,121.76, 150,016.32 and 70,477.29 is: 105,598.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,121.76 : 150,016.32 = 70,477.29 : x
  2. Step 2: Convert to fraction form
    100,121.76/150,016.32 = 70,477.29/x
  3. Step 3: Cross multiply
    100,121.76x = 150,016.32 × 70,477.29
  4. Step 4: Simplify right side
    100,121.76x = 10,572,743,689.37
  5. Step 5: Solve for x
    x = 10,572,743,689.37/100,121.76
  6. Step 6: Final answer
    x = 105,598.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.