Home / 132,990,420.40-199,611,601.80-81,972,084.40

Finding the Fourth Proportional to 132,990,420.40, 199,611,601.80 and 81,972,084.40

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Solution

The fourth proportional to 132,990,420.40, 199,611,601.80 and 81,972,084.40 is: 123,035,772.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,990,420.40 : 199,611,601.80 = 81,972,084.40 : x
  2. Step 2: Convert to fraction form
    132,990,420.40/199,611,601.80 = 81,972,084.40/x
  3. Step 3: Cross multiply
    132,990,420.40x = 199,611,601.80 × 81,972,084.40
  4. Step 4: Simplify right side
    132,990,420.40x = 16,362,579,069,968,794
  5. Step 5: Solve for x
    x = 16,362,579,069,968,794/132,990,420.40
  6. Step 6: Final answer
    x = 123,035,772.21

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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.