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Finding the Fourth Proportional to 112,603.20, 168,799.20 and 42,529.60

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Solution

The fourth proportional to 112,603.20, 168,799.20 and 42,529.60 is: 63,754.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,603.20 : 168,799.20 = 42,529.60 : x
  2. Step 2: Convert to fraction form
    112,603.20/168,799.20 = 42,529.60/x
  3. Step 3: Cross multiply
    112,603.20x = 168,799.20 × 42,529.60
  4. Step 4: Simplify right side
    112,603.20x = 7,178,962,456.32
  5. Step 5: Solve for x
    x = 7,178,962,456.32/112,603.20
  6. Step 6: Final answer
    x = 63,754.52

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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.