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Finding the Fourth Proportional to 127,266.60, 190,899.90 and 89,868.90

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Solution

The fourth proportional to 127,266.60, 190,899.90 and 89,868.90 is: 134,803.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,266.60 : 190,899.90 = 89,868.90 : x
  2. Step 2: Convert to fraction form
    127,266.60/190,899.90 = 89,868.90/x
  3. Step 3: Cross multiply
    127,266.60x = 190,899.90 × 89,868.90
  4. Step 4: Simplify right side
    127,266.60x = 17,155,964,023.11
  5. Step 5: Solve for x
    x = 17,155,964,023.11/127,266.60
  6. Step 6: Final answer
    x = 134,803.35

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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.