Home / 172,635,501.80-258,528,099.90-81,652,802.60

Finding the Fourth Proportional to 172,635,501.80, 258,528,099.90 and 81,652,802.60

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Solution

The fourth proportional to 172,635,501.80, 258,528,099.90 and 81,652,802.60 is: 122,278,115.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,635,501.80 : 258,528,099.90 = 81,652,802.60 : x
  2. Step 2: Convert to fraction form
    172,635,501.80/258,528,099.90 = 81,652,802.60/x
  3. Step 3: Cross multiply
    172,635,501.80x = 258,528,099.90 × 81,652,802.60
  4. Step 4: Simplify right side
    172,635,501.80x = 21,109,543,907,687,780
  5. Step 5: Solve for x
    x = 21,109,543,907,687,780/172,635,501.80
  6. Step 6: Final answer
    x = 122,278,115.96

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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.