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Finding the Third Proportional to 85,288,056 and 121,878,609

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Solution

The third proportional to 85,288,056 and 121,878,609 is: 174,167,357.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,288,056 : 121,878,609 = 121,878,609 : x
  2. Step 2: Convert to fraction form
    85,288,056/121,878,609 = 121,878,609/x
  3. Step 3: Cross multiply
    85,288,056x = 121,878,609 × 121,878,609
  4. Step 4: Simplify right side
    85,288,056x = 14,854,395,331,774,880
  5. Step 5: Solve for x
    x = 14,854,395,331,774,880/85,288,056
  6. Step 6: Final answer
    x = 174,167,357.41

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.