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Finding the Fourth Proportional to 189,006.65, 260,829.16 and 104,123.71

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Solution

The fourth proportional to 189,006.65, 260,829.16 and 104,123.71 is: 143,690.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,006.65 : 260,829.16 = 104,123.71 : x
  2. Step 2: Convert to fraction form
    189,006.65/260,829.16 = 104,123.71/x
  3. Step 3: Cross multiply
    189,006.65x = 260,829.16 × 104,123.71
  4. Step 4: Simplify right side
    189,006.65x = 27,158,497,990.62
  5. Step 5: Solve for x
    x = 27,158,497,990.62/189,006.65
  6. Step 6: Final answer
    x = 143,690.70

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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.