Home / 103,415.28-142,767.51-69,601.53

Finding the Fourth Proportional to 103,415.28, 142,767.51 and 69,601.53

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Solution

The fourth proportional to 103,415.28, 142,767.51 and 69,601.53 is: 96,086.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,415.28 : 142,767.51 = 69,601.53 : x
  2. Step 2: Convert to fraction form
    103,415.28/142,767.51 = 69,601.53/x
  3. Step 3: Cross multiply
    103,415.28x = 142,767.51 × 69,601.53
  4. Step 4: Simplify right side
    103,415.28x = 9,936,836,993.10
  5. Step 5: Solve for x
    x = 9,936,836,993.10/103,415.28
  6. Step 6: Final answer
    x = 96,086.74

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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.