Home / 172,346,747.80-258,520,121.70-86,098,466.20

Finding the Fourth Proportional to 172,346,747.80, 258,520,121.70 and 86,098,466.20

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Solution

The fourth proportional to 172,346,747.80, 258,520,121.70 and 86,098,466.20 is: 129,147,699.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,346,747.80 : 258,520,121.70 = 86,098,466.20 : x
  2. Step 2: Convert to fraction form
    172,346,747.80/258,520,121.70 = 86,098,466.20/x
  3. Step 3: Cross multiply
    172,346,747.80x = 258,520,121.70 × 86,098,466.20
  4. Step 4: Simplify right side
    172,346,747.80x = 22,258,185,960,207,336
  5. Step 5: Solve for x
    x = 22,258,185,960,207,336/172,346,747.80
  6. Step 6: Final answer
    x = 129,147,699.30

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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.