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Finding the Fourth Proportional to 127,225.60, 190,838.40 and 74,008.60

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Solution

The fourth proportional to 127,225.60, 190,838.40 and 74,008.60 is: 111,012.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,225.60 : 190,838.40 = 74,008.60 : x
  2. Step 2: Convert to fraction form
    127,225.60/190,838.40 = 74,008.60/x
  3. Step 3: Cross multiply
    127,225.60x = 190,838.40 × 74,008.60
  4. Step 4: Simplify right side
    127,225.60x = 14,123,682,810.24
  5. Step 5: Solve for x
    x = 14,123,682,810.24/127,225.60
  6. Step 6: Final answer
    x = 111,012.90

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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.