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Finding the Fourth Proportional to 145,328.40, 217,992.60 and 75,344.40

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Solution

The fourth proportional to 145,328.40, 217,992.60 and 75,344.40 is: 113,016.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,328.40 : 217,992.60 = 75,344.40 : x
  2. Step 2: Convert to fraction form
    145,328.40/217,992.60 = 75,344.40/x
  3. Step 3: Cross multiply
    145,328.40x = 217,992.60 × 75,344.40
  4. Step 4: Simplify right side
    145,328.40x = 16,424,521,651.44
  5. Step 5: Solve for x
    x = 16,424,521,651.44/145,328.40
  6. Step 6: Final answer
    x = 113,016.60

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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.