Home / 132,860,666.60-199,290,999.90-81,204,601.40

Finding the Fourth Proportional to 132,860,666.60, 199,290,999.90 and 81,204,601.40

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Solution

The fourth proportional to 132,860,666.60, 199,290,999.90 and 81,204,601.40 is: 121,806,902.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,860,666.60 : 199,290,999.90 = 81,204,601.40 : x
  2. Step 2: Convert to fraction form
    132,860,666.60/199,290,999.90 = 81,204,601.40/x
  3. Step 3: Cross multiply
    132,860,666.60x = 199,290,999.90 × 81,204,601.40
  4. Step 4: Simplify right side
    132,860,666.60x = 16,183,346,209,486,942
  5. Step 5: Solve for x
    x = 16,183,346,209,486,942/132,860,666.60
  6. Step 6: Final answer
    x = 121,806,902.10

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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.