Home / 172,074,936.53-258,188,688.68-90,174,342.49

Finding the Fourth Proportional to 172,074,936.53, 258,188,688.68 and 90,174,342.49

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Solution

The fourth proportional to 172,074,936.53, 258,188,688.68 and 90,174,342.49 is: 135,301,489.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,074,936.53 : 258,188,688.68 = 90,174,342.49 : x
  2. Step 2: Convert to fraction form
    172,074,936.53/258,188,688.68 = 90,174,342.49/x
  3. Step 3: Cross multiply
    172,074,936.53x = 258,188,688.68 × 90,174,342.49
  4. Step 4: Simplify right side
    172,074,936.53x = 23,281,995,238,977,964
  5. Step 5: Solve for x
    x = 23,281,995,238,977,964/172,074,936.53
  6. Step 6: Final answer
    x = 135,301,489.62

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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.