Home / 103,412.52-142,769.11-67,664.87

Finding the Fourth Proportional to 103,412.52, 142,769.11 and 67,664.87

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Solution

The fourth proportional to 103,412.52, 142,769.11 and 67,664.87 is: 93,416.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,412.52 : 142,769.11 = 67,664.87 : x
  2. Step 2: Convert to fraction form
    103,412.52/142,769.11 = 67,664.87/x
  3. Step 3: Cross multiply
    103,412.52x = 142,769.11 × 67,664.87
  4. Step 4: Simplify right side
    103,412.52x = 9,660,452,857.11
  5. Step 5: Solve for x
    x = 9,660,452,857.11/103,412.52
  6. Step 6: Final answer
    x = 93,416.66

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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.