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Finding the Fourth Proportional to 122,190.90, 183,171.42 and 65,946.72

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Solution

The fourth proportional to 122,190.90, 183,171.42 and 65,946.72 is: 98,858.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,190.90 : 183,171.42 = 65,946.72 : x
  2. Step 2: Convert to fraction form
    122,190.90/183,171.42 = 65,946.72/x
  3. Step 3: Cross multiply
    122,190.90x = 183,171.42 × 65,946.72
  4. Step 4: Simplify right side
    122,190.90x = 12,079,554,346.74
  5. Step 5: Solve for x
    x = 12,079,554,346.74/122,190.90
  6. Step 6: Final answer
    x = 98,858.05

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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.