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Finding the Fourth Proportional to 189,043.78, 260,880.20 and 104,160.82

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Solution

The fourth proportional to 189,043.78, 260,880.20 and 104,160.82 is: 143,741.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,043.78 : 260,880.20 = 104,160.82 : x
  2. Step 2: Convert to fraction form
    189,043.78/260,880.20 = 104,160.82/x
  3. Step 3: Cross multiply
    189,043.78x = 260,880.20 × 104,160.82
  4. Step 4: Simplify right side
    189,043.78x = 27,173,495,553.76
  5. Step 5: Solve for x
    x = 27,173,495,553.76/189,043.78
  6. Step 6: Final answer
    x = 143,741.81

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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.