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Finding the Fourth Proportional to 171,509.01, 257,290.78 and 53,155.86

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Solution

The fourth proportional to 171,509.01, 257,290.78 and 53,155.86 is: 79,742.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,509.01 : 257,290.78 = 53,155.86 : x
  2. Step 2: Convert to fraction form
    171,509.01/257,290.78 = 53,155.86/x
  3. Step 3: Cross multiply
    171,509.01x = 257,290.78 × 53,155.86
  4. Step 4: Simplify right side
    171,509.01x = 13,676,512,680.97
  5. Step 5: Solve for x
    x = 13,676,512,680.97/171,509.01
  6. Step 6: Final answer
    x = 79,742.24

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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.