Home / 117,216,564-161,758,858.32-65,013,593.28

Finding the Fourth Proportional to 117,216,564, 161,758,858.32 and 65,013,593.28

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Solution

The fourth proportional to 117,216,564, 161,758,858.32 and 65,013,593.28 is: 89,718,758.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,216,564 : 161,758,858.32 = 65,013,593.28 : x
  2. Step 2: Convert to fraction form
    117,216,564/161,758,858.32 = 65,013,593.28/x
  3. Step 3: Cross multiply
    117,216,564x = 161,758,858.32 × 65,013,593.28
  4. Step 4: Simplify right side
    117,216,564x = 10,516,524,624,253,624
  5. Step 5: Solve for x
    x = 10,516,524,624,253,624/117,216,564
  6. Step 6: Final answer
    x = 89,718,758.73

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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.