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Finding the Fourth Proportional to 101,438.53, 139,995.68 and 58,419.55

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Solution

The fourth proportional to 101,438.53, 139,995.68 and 58,419.55 is: 80,625.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,438.53 : 139,995.68 = 58,419.55 : x
  2. Step 2: Convert to fraction form
    101,438.53/139,995.68 = 58,419.55/x
  3. Step 3: Cross multiply
    101,438.53x = 139,995.68 × 58,419.55
  4. Step 4: Simplify right side
    101,438.53x = 8,178,485,150.64
  5. Step 5: Solve for x
    x = 8,178,485,150.64/101,438.53
  6. Step 6: Final answer
    x = 80,625.04

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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.