Home / 120,804,598.40-180,994,321.20-99,121,805.60

Finding the Fourth Proportional to 120,804,598.40, 180,994,321.20 and 99,121,805.60

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Solution

The fourth proportional to 120,804,598.40, 180,994,321.20 and 99,121,805.60 is: 148,508,286.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,804,598.40 : 180,994,321.20 = 99,121,805.60 : x
  2. Step 2: Convert to fraction form
    120,804,598.40/180,994,321.20 = 99,121,805.60/x
  3. Step 3: Cross multiply
    120,804,598.40x = 180,994,321.20 × 99,121,805.60
  4. Step 4: Simplify right side
    120,804,598.40x = 17,940,483,920,690,356
  5. Step 5: Solve for x
    x = 17,940,483,920,690,356/120,804,598.40
  6. Step 6: Final answer
    x = 148,508,286.59

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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.