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Finding the Third Proportional to 64,721,898 and 139,048,848

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Solution

The third proportional to 64,721,898 and 139,048,848 is: 298,733,237.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,721,898 : 139,048,848 = 139,048,848 : x
  2. Step 2: Convert to fraction form
    64,721,898/139,048,848 = 139,048,848/x
  3. Step 3: Cross multiply
    64,721,898x = 139,048,848 × 139,048,848
  4. Step 4: Simplify right side
    64,721,898x = 19,334,582,130,127,104
  5. Step 5: Solve for x
    x = 19,334,582,130,127,104/64,721,898
  6. Step 6: Final answer
    x = 298,733,237.55

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.