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Finding the Third Proportional to 70,618,209 and 149,636,928

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Solution

The third proportional to 70,618,209 and 149,636,928 is: 317,074,173.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,618,209 : 149,636,928 = 149,636,928 : x
  2. Step 2: Convert to fraction form
    70,618,209/149,636,928 = 149,636,928/x
  3. Step 3: Cross multiply
    70,618,209x = 149,636,928 × 149,636,928
  4. Step 4: Simplify right side
    70,618,209x = 22,391,210,221,277,184
  5. Step 5: Solve for x
    x = 22,391,210,221,277,184/70,618,209
  6. Step 6: Final answer
    x = 317,074,173.05

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.