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Finding the Fourth Proportional to 127,615.40, 191,423.10 and 109,900.70

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Solution

The fourth proportional to 127,615.40, 191,423.10 and 109,900.70 is: 164,851.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,615.40 : 191,423.10 = 109,900.70 : x
  2. Step 2: Convert to fraction form
    127,615.40/191,423.10 = 109,900.70/x
  3. Step 3: Cross multiply
    127,615.40x = 191,423.10 × 109,900.70
  4. Step 4: Simplify right side
    127,615.40x = 21,037,532,686.17
  5. Step 5: Solve for x
    x = 21,037,532,686.17/127,615.40
  6. Step 6: Final answer
    x = 164,851.05

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.