Home / 170,811.20-256,316.64-123,379.52

Finding the Fourth Proportional to 170,811.20, 256,316.64 and 123,379.52

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Solution

The fourth proportional to 170,811.20, 256,316.64 and 123,379.52 is: 185,141.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,811.20 : 256,316.64 = 123,379.52 : x
  2. Step 2: Convert to fraction form
    170,811.20/256,316.64 = 123,379.52/x
  3. Step 3: Cross multiply
    170,811.20x = 256,316.64 × 123,379.52
  4. Step 4: Simplify right side
    170,811.20x = 31,624,224,011.21
  5. Step 5: Solve for x
    x = 31,624,224,011.21/170,811.20
  6. Step 6: Final answer
    x = 185,141.40

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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.