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Finding the Fourth Proportional to 171,389.42, 257,108.06 and 71,526.74

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Solution

The fourth proportional to 171,389.42, 257,108.06 and 71,526.74 is: 107,300.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,389.42 : 257,108.06 = 71,526.74 : x
  2. Step 2: Convert to fraction form
    171,389.42/257,108.06 = 71,526.74/x
  3. Step 3: Cross multiply
    171,389.42x = 257,108.06 × 71,526.74
  4. Step 4: Simplify right side
    171,389.42x = 18,390,099,716.35
  5. Step 5: Solve for x
    x = 18,390,099,716.35/171,389.42
  6. Step 6: Final answer
    x = 107,300.09

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1.5x scale

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.