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Finding the Fourth Proportional to 171,411.36, 257,148.36 and 53,074.68

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Solution

The fourth proportional to 171,411.36, 257,148.36 and 53,074.68 is: 79,621.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,411.36 : 257,148.36 = 53,074.68 : x
  2. Step 2: Convert to fraction form
    171,411.36/257,148.36 = 53,074.68/x
  3. Step 3: Cross multiply
    171,411.36x = 257,148.36 × 53,074.68
  4. Step 4: Simplify right side
    171,411.36x = 13,648,066,919.52
  5. Step 5: Solve for x
    x = 13,648,066,919.52/171,411.36
  6. Step 6: Final answer
    x = 79,621.72

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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.