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Finding the Third Proportional to 121,440,580 and 187,835,638

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Solution

The third proportional to 121,440,580 and 187,835,638 is: 290,530,783.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,440,580 : 187,835,638 = 187,835,638 : x
  2. Step 2: Convert to fraction form
    121,440,580/187,835,638 = 187,835,638/x
  3. Step 3: Cross multiply
    121,440,580x = 187,835,638 × 187,835,638
  4. Step 4: Simplify right side
    121,440,580x = 35,282,226,902,867,044
  5. Step 5: Solve for x
    x = 35,282,226,902,867,044/121,440,580
  6. Step 6: Final answer
    x = 290,530,783.89

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.