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Finding the Fourth Proportional to 124,411.20, 186,616.80 and 109,636.80

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Solution

The fourth proportional to 124,411.20, 186,616.80 and 109,636.80 is: 164,455.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,411.20 : 186,616.80 = 109,636.80 : x
  2. Step 2: Convert to fraction form
    124,411.20/186,616.80 = 109,636.80/x
  3. Step 3: Cross multiply
    124,411.20x = 186,616.80 × 109,636.80
  4. Step 4: Simplify right side
    124,411.20x = 20,460,068,778.24
  5. Step 5: Solve for x
    x = 20,460,068,778.24/124,411.20
  6. Step 6: Final answer
    x = 164,455.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.