Home / 105,136.48-145,090.38-57,394

Finding the Fourth Proportional to 105,136.48, 145,090.38 and 57,394

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Solution

The fourth proportional to 105,136.48, 145,090.38 and 57,394 is: 79,204.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,136.48 : 145,090.38 = 57,394 : x
  2. Step 2: Convert to fraction form
    105,136.48/145,090.38 = 57,394/x
  3. Step 3: Cross multiply
    105,136.48x = 145,090.38 × 57,394
  4. Step 4: Simplify right side
    105,136.48x = 8,327,317,269.72
  5. Step 5: Solve for x
    x = 8,327,317,269.72/105,136.48
  6. Step 6: Final answer
    x = 79,204.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.