Home / 120,193,487.31-179,279,688.75-109,159,402.03

Finding the Fourth Proportional to 120,193,487.31, 179,279,688.75 and 109,159,402.03

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Solution

The fourth proportional to 120,193,487.31, 179,279,688.75 and 109,159,402.03 is: 162,821,331.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,193,487.31 : 179,279,688.75 = 109,159,402.03 : x
  2. Step 2: Convert to fraction form
    120,193,487.31/179,279,688.75 = 109,159,402.03/x
  3. Step 3: Cross multiply
    120,193,487.31x = 179,279,688.75 × 109,159,402.03
  4. Step 4: Simplify right side
    120,193,487.31x = 19,570,063,620,224,524
  5. Step 5: Solve for x
    x = 19,570,063,620,224,524/120,193,487.31
  6. Step 6: Final answer
    x = 162,821,331.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.