Home / 172,649,979.20-258,933,496.80-99,709,025.60

Finding the Fourth Proportional to 172,649,979.20, 258,933,496.80 and 99,709,025.60

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Solution

The fourth proportional to 172,649,979.20, 258,933,496.80 and 99,709,025.60 is: 149,539,587.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,649,979.20 : 258,933,496.80 = 99,709,025.60 : x
  2. Step 2: Convert to fraction form
    172,649,979.20/258,933,496.80 = 99,709,025.60/x
  3. Step 3: Cross multiply
    172,649,979.20x = 258,933,496.80 × 99,709,025.60
  4. Step 4: Simplify right side
    172,649,979.20x = 25,818,006,661,128,716
  5. Step 5: Solve for x
    x = 25,818,006,661,128,716/172,649,979.20
  6. Step 6: Final answer
    x = 149,539,587.44

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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.