Home / 190,250.89-285,379.13-90,421.27

Finding the Fourth Proportional to 190,250.89, 285,379.13 and 90,421.27

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Solution

The fourth proportional to 190,250.89, 285,379.13 and 90,421.27 is: 135,633.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,250.89 : 285,379.13 = 90,421.27 : x
  2. Step 2: Convert to fraction form
    190,250.89/285,379.13 = 90,421.27/x
  3. Step 3: Cross multiply
    190,250.89x = 285,379.13 × 90,421.27
  4. Step 4: Simplify right side
    190,250.89x = 25,804,343,366.10
  5. Step 5: Solve for x
    x = 25,804,343,366.10/190,250.89
  6. Step 6: Final answer
    x = 135,633.23

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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.