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Finding the Fourth Proportional to 171,427.10, 257,140.65 and 60,619.10

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Solution

The fourth proportional to 171,427.10, 257,140.65 and 60,619.10 is: 90,928.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,427.10 : 257,140.65 = 60,619.10 : x
  2. Step 2: Convert to fraction form
    171,427.10/257,140.65 = 60,619.10/x
  3. Step 3: Cross multiply
    171,427.10x = 257,140.65 × 60,619.10
  4. Step 4: Simplify right side
    171,427.10x = 15,587,634,776.42
  5. Step 5: Solve for x
    x = 15,587,634,776.42/171,427.10
  6. Step 6: Final answer
    x = 90,928.65

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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.