Home / 120,669,427.08-166,607,121.78-112,959,989.64

Finding the Fourth Proportional to 120,669,427.08, 166,607,121.78 and 112,959,989.64

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Solution

The fourth proportional to 120,669,427.08, 166,607,121.78 and 112,959,989.64 is: 155,962,775.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,669,427.08 : 166,607,121.78 = 112,959,989.64 : x
  2. Step 2: Convert to fraction form
    120,669,427.08/166,607,121.78 = 112,959,989.64/x
  3. Step 3: Cross multiply
    120,669,427.08x = 166,607,121.78 × 112,959,989.64
  4. Step 4: Simplify right side
    120,669,427.08x = 18,819,938,750,219,020
  5. Step 5: Solve for x
    x = 18,819,938,750,219,020/120,669,427.08
  6. Step 6: Final answer
    x = 155,962,775.37

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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.