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Finding the Third Proportional to 90,998,672 and 139,539,504

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Solution

The third proportional to 90,998,672 and 139,539,504 is: 213,973,157.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,998,672 : 139,539,504 = 139,539,504 : x
  2. Step 2: Convert to fraction form
    90,998,672/139,539,504 = 139,539,504/x
  3. Step 3: Cross multiply
    90,998,672x = 139,539,504 × 139,539,504
  4. Step 4: Simplify right side
    90,998,672x = 19,471,273,176,566,016
  5. Step 5: Solve for x
    x = 19,471,273,176,566,016/90,998,672
  6. Step 6: Final answer
    x = 213,973,157.50

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.