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Finding the Third Proportional to 85,319,380.69 and 128,875,672.69

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Solution

The third proportional to 85,319,380.69 and 128,875,672.69 is: 194,667,833.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,319,380.69 : 128,875,672.69 = 128,875,672.69 : x
  2. Step 2: Convert to fraction form
    85,319,380.69/128,875,672.69 = 128,875,672.69/x
  3. Step 3: Cross multiply
    85,319,380.69x = 128,875,672.69 × 128,875,672.69
  4. Step 4: Simplify right side
    85,319,380.69x = 16,608,939,010,655,634
  5. Step 5: Solve for x
    x = 16,608,939,010,655,634/85,319,380.69
  6. Step 6: Final answer
    x = 194,667,833.70

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.