Home / 190,136.19-285,341.64-74,747.85

Finding the Fourth Proportional to 190,136.19, 285,341.64 and 74,747.85

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Solution

The fourth proportional to 190,136.19, 285,341.64 and 74,747.85 is: 112,175.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,136.19 : 285,341.64 = 74,747.85 : x
  2. Step 2: Convert to fraction form
    190,136.19/285,341.64 = 74,747.85/x
  3. Step 3: Cross multiply
    190,136.19x = 285,341.64 × 74,747.85
  4. Step 4: Simplify right side
    190,136.19x = 21,328,674,105.47
  5. Step 5: Solve for x
    x = 21,328,674,105.47/190,136.19
  6. Step 6: Final answer
    x = 112,175.77

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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.