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Finding the Fourth Proportional to 189,026.88, 260,894.76 and 108,508.80

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Solution

The fourth proportional to 189,026.88, 260,894.76 and 108,508.80 is: 149,763.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,026.88 : 260,894.76 = 108,508.80 : x
  2. Step 2: Convert to fraction form
    189,026.88/260,894.76 = 108,508.80/x
  3. Step 3: Cross multiply
    189,026.88x = 260,894.76 × 108,508.80
  4. Step 4: Simplify right side
    189,026.88x = 28,309,377,333.89
  5. Step 5: Solve for x
    x = 28,309,377,333.89/189,026.88
  6. Step 6: Final answer
    x = 149,763.77

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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.