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Finding the Fourth Proportional to 127,225.80, 190,838.70 and 74,081.70

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Solution

The fourth proportional to 127,225.80, 190,838.70 and 74,081.70 is: 111,122.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,225.80 : 190,838.70 = 74,081.70 : x
  2. Step 2: Convert to fraction form
    127,225.80/190,838.70 = 74,081.70/x
  3. Step 3: Cross multiply
    127,225.80x = 190,838.70 × 74,081.70
  4. Step 4: Simplify right side
    127,225.80x = 14,137,655,321.79
  5. Step 5: Solve for x
    x = 14,137,655,321.79/127,225.80
  6. Step 6: Final answer
    x = 111,122.55

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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.