Home / 172,578,800.40-258,868,200.60-81,879,536.40

Finding the Fourth Proportional to 172,578,800.40, 258,868,200.60 and 81,879,536.40

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Solution

The fourth proportional to 172,578,800.40, 258,868,200.60 and 81,879,536.40 is: 122,819,304.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,578,800.40 : 258,868,200.60 = 81,879,536.40 : x
  2. Step 2: Convert to fraction form
    172,578,800.40/258,868,200.60 = 81,879,536.40/x
  3. Step 3: Cross multiply
    172,578,800.40x = 258,868,200.60 × 81,879,536.40
  4. Step 4: Simplify right side
    172,578,800.40x = 21,196,008,253,830,204
  5. Step 5: Solve for x
    x = 21,196,008,253,830,204/172,578,800.40
  6. Step 6: Final answer
    x = 122,819,304.60

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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.