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Finding the Fourth Proportional to 189,044.16, 260,868.72 and 112,568.86

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Solution

The fourth proportional to 189,044.16, 260,868.72 and 112,568.86 is: 155,337.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,044.16 : 260,868.72 = 112,568.86 : x
  2. Step 2: Convert to fraction form
    189,044.16/260,868.72 = 112,568.86/x
  3. Step 3: Cross multiply
    189,044.16x = 260,868.72 × 112,568.86
  4. Step 4: Simplify right side
    189,044.16x = 29,365,694,420.06
  5. Step 5: Solve for x
    x = 29,365,694,420.06/189,044.16
  6. Step 6: Final answer
    x = 155,337.75

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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.