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Finding the Fourth Proportional to 189,154.64, 261,035.16 and 104,274.74

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Solution

The fourth proportional to 189,154.64, 261,035.16 and 104,274.74 is: 143,900.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,154.64 : 261,035.16 = 104,274.74 : x
  2. Step 2: Convert to fraction form
    189,154.64/261,035.16 = 104,274.74/x
  3. Step 3: Cross multiply
    189,154.64x = 261,035.16 × 104,274.74
  4. Step 4: Simplify right side
    189,154.64x = 27,219,373,701.42
  5. Step 5: Solve for x
    x = 27,219,373,701.42/189,154.64
  6. Step 6: Final answer
    x = 143,900.11

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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.