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Finding the Fourth Proportional to 113,489.20, 170,233.80 and 102,602.80

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Solution

The fourth proportional to 113,489.20, 170,233.80 and 102,602.80 is: 153,904.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,489.20 : 170,233.80 = 102,602.80 : x
  2. Step 2: Convert to fraction form
    113,489.20/170,233.80 = 102,602.80/x
  3. Step 3: Cross multiply
    113,489.20x = 170,233.80 × 102,602.80
  4. Step 4: Simplify right side
    113,489.20x = 17,466,464,534.64
  5. Step 5: Solve for x
    x = 17,466,464,534.64/113,489.20
  6. Step 6: Final answer
    x = 153,904.20

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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.