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Finding the Fourth Proportional to 189,472.64, 261,470.63 and 104,587.88

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Solution

The fourth proportional to 189,472.64, 261,470.63 and 104,587.88 is: 144,330.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,472.64 : 261,470.63 = 104,587.88 : x
  2. Step 2: Convert to fraction form
    189,472.64/261,470.63 = 104,587.88/x
  3. Step 3: Cross multiply
    189,472.64x = 261,470.63 × 104,587.88
  4. Step 4: Simplify right side
    189,472.64x = 27,346,657,828.08
  5. Step 5: Solve for x
    x = 27,346,657,828.08/189,472.64
  6. Step 6: Final answer
    x = 144,330.38

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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.