Home / 139,968,122.70-209,952,184.16-85,548,564.30

Finding the Fourth Proportional to 139,968,122.70, 209,952,184.16 and 85,548,564.30

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Solution

The fourth proportional to 139,968,122.70, 209,952,184.16 and 85,548,564.30 is: 128,322,846.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,122.70 : 209,952,184.16 = 85,548,564.30 : x
  2. Step 2: Convert to fraction form
    139,968,122.70/209,952,184.16 = 85,548,564.30/x
  3. Step 3: Cross multiply
    139,968,122.70x = 209,952,184.16 × 85,548,564.30
  4. Step 4: Simplify right side
    139,968,122.70x = 17,961,107,926,109,458
  5. Step 5: Solve for x
    x = 17,961,107,926,109,458/139,968,122.70
  6. Step 6: Final answer
    x = 128,322,846.51

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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.