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Finding the Fourth Proportional to 122,139.60, 183,209.40 and 109,892.40

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Solution

The fourth proportional to 122,139.60, 183,209.40 and 109,892.40 is: 164,838.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,139.60 : 183,209.40 = 109,892.40 : x
  2. Step 2: Convert to fraction form
    122,139.60/183,209.40 = 109,892.40/x
  3. Step 3: Cross multiply
    122,139.60x = 183,209.40 × 109,892.40
  4. Step 4: Simplify right side
    122,139.60x = 20,133,320,668.56
  5. Step 5: Solve for x
    x = 20,133,320,668.56/122,139.60
  6. Step 6: Final answer
    x = 164,838.60

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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.