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Finding the Third Proportional to 72,912,840 and 158,343,771

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Solution

The third proportional to 72,912,840 and 158,343,771 is: 343,872,901.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,912,840 : 158,343,771 = 158,343,771 : x
  2. Step 2: Convert to fraction form
    72,912,840/158,343,771 = 158,343,771/x
  3. Step 3: Cross multiply
    72,912,840x = 158,343,771 × 158,343,771
  4. Step 4: Simplify right side
    72,912,840x = 25,072,749,814,500,440
  5. Step 5: Solve for x
    x = 25,072,749,814,500,440/72,912,840
  6. Step 6: Final answer
    x = 343,872,901.05

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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.