Home / 189,432.92-261,417.98-103,392.69

Finding the Fourth Proportional to 189,432.92, 261,417.98 and 103,392.69

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Solution

The fourth proportional to 189,432.92, 261,417.98 and 103,392.69 is: 142,682.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,432.92 : 261,417.98 = 103,392.69 : x
  2. Step 2: Convert to fraction form
    189,432.92/261,417.98 = 103,392.69/x
  3. Step 3: Cross multiply
    189,432.92x = 261,417.98 × 103,392.69
  4. Step 4: Simplify right side
    189,432.92x = 27,028,707,649.60
  5. Step 5: Solve for x
    x = 27,028,707,649.60/189,432.92
  6. Step 6: Final answer
    x = 142,682.21

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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.