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Finding the Fourth Proportional to 189,475.64, 261,478.20 and 104,590.88

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Solution

The fourth proportional to 189,475.64, 261,478.20 and 104,590.88 is: 144,336.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,475.64 : 261,478.20 = 104,590.88 : x
  2. Step 2: Convert to fraction form
    189,475.64/261,478.20 = 104,590.88/x
  3. Step 3: Cross multiply
    189,475.64x = 261,478.20 × 104,590.88
  4. Step 4: Simplify right side
    189,475.64x = 27,348,235,038.82
  5. Step 5: Solve for x
    x = 27,348,235,038.82/189,475.64
  6. Step 6: Final answer
    x = 144,336.42

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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.