Home / 103,112.38-142,319.19-67,239.91

Finding the Fourth Proportional to 103,112.38, 142,319.19 and 67,239.91

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Solution

The fourth proportional to 103,112.38, 142,319.19 and 67,239.91 is: 92,806.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,112.38 : 142,319.19 = 67,239.91 : x
  2. Step 2: Convert to fraction form
    103,112.38/142,319.19 = 67,239.91/x
  3. Step 3: Cross multiply
    103,112.38x = 142,319.19 × 67,239.91
  4. Step 4: Simplify right side
    103,112.38x = 9,569,529,526.87
  5. Step 5: Solve for x
    x = 9,569,529,526.87/103,112.38
  6. Step 6: Final answer
    x = 92,806.80

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1.5x scale

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.