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Finding the Fourth Proportional to 209,636.88, 289,253.88 and 124,737.36

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Solution

The fourth proportional to 209,636.88, 289,253.88 and 124,737.36 is: 172,110.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,636.88 : 289,253.88 = 124,737.36 : x
  2. Step 2: Convert to fraction form
    209,636.88/289,253.88 = 124,737.36/x
  3. Step 3: Cross multiply
    209,636.88x = 289,253.88 × 124,737.36
  4. Step 4: Simplify right side
    209,636.88x = 36,080,765,360.96
  5. Step 5: Solve for x
    x = 36,080,765,360.96/209,636.88
  6. Step 6: Final answer
    x = 172,110.77

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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.