Home / 117,212,475-161,753,216.94-65,704,251

Finding the Fourth Proportional to 117,212,475, 161,753,216.94 and 65,704,251

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Solution

The fourth proportional to 117,212,475, 161,753,216.94 and 65,704,251 is: 90,671,867.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,212,475 : 161,753,216.94 = 65,704,251 : x
  2. Step 2: Convert to fraction form
    117,212,475/161,753,216.94 = 65,704,251/x
  3. Step 3: Cross multiply
    117,212,475x = 161,753,216.94 × 65,704,251
  4. Step 4: Simplify right side
    117,212,475x = 10,627,873,965,883,212
  5. Step 5: Solve for x
    x = 10,627,873,965,883,212/117,212,475
  6. Step 6: Final answer
    x = 90,671,867.19

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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.