Home / 168,205,129.60-252,354,933.60-81,946,350.40

Finding the Fourth Proportional to 168,205,129.60, 252,354,933.60 and 81,946,350.40

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Solution

The fourth proportional to 168,205,129.60, 252,354,933.60 and 81,946,350.40 is: 122,942,539.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,205,129.60 : 252,354,933.60 = 81,946,350.40 : x
  2. Step 2: Convert to fraction form
    168,205,129.60/252,354,933.60 = 81,946,350.40/x
  3. Step 3: Cross multiply
    168,205,129.60x = 252,354,933.60 × 81,946,350.40
  4. Step 4: Simplify right side
    168,205,129.60x = 20,679,565,813,954,336
  5. Step 5: Solve for x
    x = 20,679,565,813,954,336/168,205,129.60
  6. Step 6: Final answer
    x = 122,942,539.64

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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.