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Finding the Third Proportional to 90,269.28 and 139,703.17

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Solution

The third proportional to 90,269.28 and 139,703.17 is: 216,208.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,269.28 : 139,703.17 = 139,703.17 : x
  2. Step 2: Convert to fraction form
    90,269.28/139,703.17 = 139,703.17/x
  3. Step 3: Cross multiply
    90,269.28x = 139,703.17 × 139,703.17
  4. Step 4: Simplify right side
    90,269.28x = 19,516,975,140.50
  5. Step 5: Solve for x
    x = 19,516,975,140.50/90,269.28
  6. Step 6: Final answer
    x = 216,208.39

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.