Home / 209,287,201.64-288,843,840.28-120,014,081.72

Finding the Fourth Proportional to 209,287,201.64, 288,843,840.28 and 120,014,081.72

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Solution

The fourth proportional to 209,287,201.64, 288,843,840.28 and 120,014,081.72 is: 165,635,203.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,287,201.64 : 288,843,840.28 = 120,014,081.72 : x
  2. Step 2: Convert to fraction form
    209,287,201.64/288,843,840.28 = 120,014,081.72/x
  3. Step 3: Cross multiply
    209,287,201.64x = 288,843,840.28 × 120,014,081.72
  4. Step 4: Simplify right side
    209,287,201.64x = 34,665,328,251,682,544
  5. Step 5: Solve for x
    x = 34,665,328,251,682,544/209,287,201.64
  6. Step 6: Final answer
    x = 165,635,203.59

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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.