Home / 125,817,900.30-188,511,321.60-99,989,867.70

Finding the Fourth Proportional to 125,817,900.30, 188,511,321.60 and 99,989,867.70

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Solution

The fourth proportional to 125,817,900.30, 188,511,321.60 and 99,989,867.70 is: 149,813,516.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,817,900.30 : 188,511,321.60 = 99,989,867.70 : x
  2. Step 2: Convert to fraction form
    125,817,900.30/188,511,321.60 = 99,989,867.70/x
  3. Step 3: Cross multiply
    125,817,900.30x = 188,511,321.60 × 99,989,867.70
  4. Step 4: Simplify right side
    125,817,900.30x = 18,849,222,106,736,152
  5. Step 5: Solve for x
    x = 18,849,222,106,736,152/125,817,900.30
  6. Step 6: Final answer
    x = 149,813,516.69

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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.