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Finding the Fourth Proportional to 189,051.64, 260,879.10 and 112,576.39

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Solution

The fourth proportional to 189,051.64, 260,879.10 and 112,576.39 is: 155,348.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,051.64 : 260,879.10 = 112,576.39 : x
  2. Step 2: Convert to fraction form
    189,051.64/260,879.10 = 112,576.39/x
  3. Step 3: Cross multiply
    189,051.64x = 260,879.10 × 112,576.39
  4. Step 4: Simplify right side
    189,051.64x = 29,368,827,304.45
  5. Step 5: Solve for x
    x = 29,368,827,304.45/189,051.64
  6. Step 6: Final answer
    x = 155,348.18

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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.