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Finding the Third Proportional to 90,393 and 129,133.50

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Solution

The third proportional to 90,393 and 129,133.50 is: 184,477.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,393 : 129,133.50 = 129,133.50 : x
  2. Step 2: Convert to fraction form
    90,393/129,133.50 = 129,133.50/x
  3. Step 3: Cross multiply
    90,393x = 129,133.50 × 129,133.50
  4. Step 4: Simplify right side
    90,393x = 16,675,460,822.25
  5. Step 5: Solve for x
    x = 16,675,460,822.25/90,393
  6. Step 6: Final answer
    x = 184,477.35

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.