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Finding the Fourth Proportional to 145,063.76, 217,167.96 and 141,486.80

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Solution

The fourth proportional to 145,063.76, 217,167.96 and 141,486.80 is: 211,813.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,063.76 : 217,167.96 = 141,486.80 : x
  2. Step 2: Convert to fraction form
    145,063.76/217,167.96 = 141,486.80/x
  3. Step 3: Cross multiply
    145,063.76x = 217,167.96 × 141,486.80
  4. Step 4: Simplify right side
    145,063.76x = 30,726,399,722.93
  5. Step 5: Solve for x
    x = 30,726,399,722.93/145,063.76
  6. Step 6: Final answer
    x = 211,813.07

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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.