Home / 120,299,519.95-180,488,141.78-55,645,736.49

Finding the Fourth Proportional to 120,299,519.95, 180,488,141.78 and 55,645,736.49

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Solution

The fourth proportional to 120,299,519.95, 180,488,141.78 and 55,645,736.49 is: 83,486,580.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,299,519.95 : 180,488,141.78 = 55,645,736.49 : x
  2. Step 2: Convert to fraction form
    120,299,519.95/180,488,141.78 = 55,645,736.49/x
  3. Step 3: Cross multiply
    120,299,519.95x = 180,488,141.78 × 55,645,736.49
  4. Step 4: Simplify right side
    120,299,519.95x = 10,043,395,576,781,412
  5. Step 5: Solve for x
    x = 10,043,395,576,781,412/120,299,519.95
  6. Step 6: Final answer
    x = 83,486,580.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.