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Finding the Third Proportional to 90,676,890.56 and 196,748,960.91

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Solution

The third proportional to 90,676,890.56 and 196,748,960.91 is: 426,902,084.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,676,890.56 : 196,748,960.91 = 196,748,960.91 : x
  2. Step 2: Convert to fraction form
    90,676,890.56/196,748,960.91 = 196,748,960.91/x
  3. Step 3: Cross multiply
    90,676,890.56x = 196,748,960.91 × 196,748,960.91
  4. Step 4: Simplify right side
    90,676,890.56x = 38,710,153,617,689,088
  5. Step 5: Solve for x
    x = 38,710,153,617,689,088/90,676,890.56
  6. Step 6: Final answer
    x = 426,902,084.73

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.