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Finding the Fourth Proportional to 122,116.20, 183,206.70 and 43,222.20

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Solution

The fourth proportional to 122,116.20, 183,206.70 and 43,222.20 is: 64,844.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,116.20 : 183,206.70 = 43,222.20 : x
  2. Step 2: Convert to fraction form
    122,116.20/183,206.70 = 43,222.20/x
  3. Step 3: Cross multiply
    122,116.20x = 183,206.70 × 43,222.20
  4. Step 4: Simplify right side
    122,116.20x = 7,918,596,628.74
  5. Step 5: Solve for x
    x = 7,918,596,628.74/122,116.20
  6. Step 6: Final answer
    x = 64,844.77

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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.