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Finding the Fourth Proportional to 128,835.84, 193,251.84 and 44,657.28

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Solution

The fourth proportional to 128,835.84, 193,251.84 and 44,657.28 is: 66,985.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,835.84 : 193,251.84 = 44,657.28 : x
  2. Step 2: Convert to fraction form
    128,835.84/193,251.84 = 44,657.28/x
  3. Step 3: Cross multiply
    128,835.84x = 193,251.84 × 44,657.28
  4. Step 4: Simplify right side
    128,835.84x = 8,630,101,529.40
  5. Step 5: Solve for x
    x = 8,630,101,529.40/128,835.84
  6. Step 6: Final answer
    x = 66,985.25

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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.