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Finding the Third Proportional to 86,485.50 and 129,728.25

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Solution

The third proportional to 86,485.50 and 129,728.25 is: 194,592.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,485.50 : 129,728.25 = 129,728.25 : x
  2. Step 2: Convert to fraction form
    86,485.50/129,728.25 = 129,728.25/x
  3. Step 3: Cross multiply
    86,485.50x = 129,728.25 × 129,728.25
  4. Step 4: Simplify right side
    86,485.50x = 16,829,418,848.06
  5. Step 5: Solve for x
    x = 16,829,418,848.06/86,485.50
  6. Step 6: Final answer
    x = 194,592.38

Related Problems

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Double scale
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Similar ratio
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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.