Home / 117,212,478-161,753,221.08-65,704,254

Finding the Fourth Proportional to 117,212,478, 161,753,221.08 and 65,704,254

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Solution

The fourth proportional to 117,212,478, 161,753,221.08 and 65,704,254 is: 90,671,871.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,212,478 : 161,753,221.08 = 65,704,254 : x
  2. Step 2: Convert to fraction form
    117,212,478/161,753,221.08 = 65,704,254/x
  3. Step 3: Cross multiply
    117,212,478x = 161,753,221.08 × 65,704,254
  4. Step 4: Simplify right side
    117,212,478x = 10,627,874,723,158,476
  5. Step 5: Solve for x
    x = 10,627,874,723,158,476/117,212,478
  6. Step 6: Final answer
    x = 90,671,871.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.