Home / 103,613.40-142,986.70-61,174.66

Finding the Fourth Proportional to 103,613.40, 142,986.70 and 61,174.66

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Solution

The fourth proportional to 103,613.40, 142,986.70 and 61,174.66 is: 84,421.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,613.40 : 142,986.70 = 61,174.66 : x
  2. Step 2: Convert to fraction form
    103,613.40/142,986.70 = 61,174.66/x
  3. Step 3: Cross multiply
    103,613.40x = 142,986.70 × 61,174.66
  4. Step 4: Simplify right side
    103,613.40x = 8,747,162,757.02
  5. Step 5: Solve for x
    x = 8,747,162,757.02/103,613.40
  6. Step 6: Final answer
    x = 84,421.15

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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.