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Finding the Third Proportional to 78,359 and 117,712.50

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Solution

The third proportional to 78,359 and 117,712.50 is: 176,830.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,359 : 117,712.50 = 117,712.50 : x
  2. Step 2: Convert to fraction form
    78,359/117,712.50 = 117,712.50/x
  3. Step 3: Cross multiply
    78,359x = 117,712.50 × 117,712.50
  4. Step 4: Simplify right side
    78,359x = 13,856,232,656.25
  5. Step 5: Solve for x
    x = 13,856,232,656.25/78,359
  6. Step 6: Final answer
    x = 176,830.14

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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.