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Finding the Fourth Proportional to 189,307.71, 261,240.46 and 104,424.77

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Solution

The fourth proportional to 189,307.71, 261,240.46 and 104,424.77 is: 144,103.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,307.71 : 261,240.46 = 104,424.77 : x
  2. Step 2: Convert to fraction form
    189,307.71/261,240.46 = 104,424.77/x
  3. Step 3: Cross multiply
    189,307.71x = 261,240.46 × 104,424.77
  4. Step 4: Simplify right side
    189,307.71x = 27,279,975,342.23
  5. Step 5: Solve for x
    x = 27,279,975,342.23/189,307.71
  6. Step 6: Final answer
    x = 144,103.88

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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.