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Finding the Third Proportional to 85,688,259 and 130,540,137

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Solution

The third proportional to 85,688,259 and 130,540,137 is: 198,868,871.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,688,259 : 130,540,137 = 130,540,137 : x
  2. Step 2: Convert to fraction form
    85,688,259/130,540,137 = 130,540,137/x
  3. Step 3: Cross multiply
    85,688,259x = 130,540,137 × 130,540,137
  4. Step 4: Simplify right side
    85,688,259x = 17,040,727,367,978,768
  5. Step 5: Solve for x
    x = 17,040,727,367,978,768/85,688,259
  6. Step 6: Final answer
    x = 198,868,871.50

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.