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Finding the Third Proportional to 121,440,578 and 187,835,635

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Solution

The third proportional to 121,440,578 and 187,835,635 is: 290,530,779.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,440,578 : 187,835,635 = 187,835,635 : x
  2. Step 2: Convert to fraction form
    121,440,578/187,835,635 = 187,835,635/x
  3. Step 3: Cross multiply
    121,440,578x = 187,835,635 × 187,835,635
  4. Step 4: Simplify right side
    121,440,578x = 35,282,225,775,853,224
  5. Step 5: Solve for x
    x = 35,282,225,775,853,224/121,440,578
  6. Step 6: Final answer
    x = 290,530,779.39

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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.