Home / 106,359.41-159,538.64-31,479.86

Finding the Fourth Proportional to 106,359.41, 159,538.64 and 31,479.86

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Solution

The fourth proportional to 106,359.41, 159,538.64 and 31,479.86 is: 47,219.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,359.41 : 159,538.64 = 31,479.86 : x
  2. Step 2: Convert to fraction form
    106,359.41/159,538.64 = 31,479.86/x
  3. Step 3: Cross multiply
    106,359.41x = 159,538.64 × 31,479.86
  4. Step 4: Simplify right side
    106,359.41x = 5,022,254,529.34
  5. Step 5: Solve for x
    x = 5,022,254,529.34/106,359.41
  6. Step 6: Final answer
    x = 47,219.66

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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.