Home / 120,804,599.40-180,994,322.70-99,121,806.60

Finding the Fourth Proportional to 120,804,599.40, 180,994,322.70 and 99,121,806.60

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Solution

The fourth proportional to 120,804,599.40, 180,994,322.70 and 99,121,806.60 is: 148,508,288.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,804,599.40 : 180,994,322.70 = 99,121,806.60 : x
  2. Step 2: Convert to fraction form
    120,804,599.40/180,994,322.70 = 99,121,806.60/x
  3. Step 3: Cross multiply
    120,804,599.40x = 180,994,322.70 × 99,121,806.60
  4. Step 4: Simplify right side
    120,804,599.40x = 17,940,484,250,367,388
  5. Step 5: Solve for x
    x = 17,940,484,250,367,388/120,804,599.40
  6. Step 6: Final answer
    x = 148,508,288.09

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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.