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Finding the Fourth Proportional to 113,361.60, 169,934.40 and 42,265.20

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Solution

The fourth proportional to 113,361.60, 169,934.40 and 42,265.20 is: 63,357.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,361.60 : 169,934.40 = 42,265.20 : x
  2. Step 2: Convert to fraction form
    113,361.60/169,934.40 = 42,265.20/x
  3. Step 3: Cross multiply
    113,361.60x = 169,934.40 × 42,265.20
  4. Step 4: Simplify right side
    113,361.60x = 7,182,311,402.88
  5. Step 5: Solve for x
    x = 7,182,311,402.88/113,361.60
  6. Step 6: Final answer
    x = 63,357.53

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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.