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Finding the Fourth Proportional to 189,238.86, 283,863.75 and 70,887.53

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Solution

The fourth proportional to 189,238.86, 283,863.75 and 70,887.53 is: 106,333.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,238.86 : 283,863.75 = 70,887.53 : x
  2. Step 2: Convert to fraction form
    189,238.86/283,863.75 = 70,887.53/x
  3. Step 3: Cross multiply
    189,238.86x = 283,863.75 × 70,887.53
  4. Step 4: Simplify right side
    189,238.86x = 20,122,400,094.04
  5. Step 5: Solve for x
    x = 20,122,400,094.04/189,238.86
  6. Step 6: Final answer
    x = 106,333.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.