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Finding the Fourth Proportional to 113,419.20, 170,128.80 and 34,533.30

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Solution

The fourth proportional to 113,419.20, 170,128.80 and 34,533.30 is: 51,799.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,419.20 : 170,128.80 = 34,533.30 : x
  2. Step 2: Convert to fraction form
    113,419.20/170,128.80 = 34,533.30/x
  3. Step 3: Cross multiply
    113,419.20x = 170,128.80 × 34,533.30
  4. Step 4: Simplify right side
    113,419.20x = 5,875,108,889.04
  5. Step 5: Solve for x
    x = 5,875,108,889.04/113,419.20
  6. Step 6: Final answer
    x = 51,799.95

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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.