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Finding the Fourth Proportional to 128,980.45, 193,472.96 and 44,743.59

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Solution

The fourth proportional to 128,980.45, 193,472.96 and 44,743.59 is: 67,116.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,980.45 : 193,472.96 = 44,743.59 : x
  2. Step 2: Convert to fraction form
    128,980.45/193,472.96 = 44,743.59/x
  3. Step 3: Cross multiply
    128,980.45x = 193,472.96 × 44,743.59
  4. Step 4: Simplify right side
    128,980.45x = 8,656,674,574.61
  5. Step 5: Solve for x
    x = 8,656,674,574.61/128,980.45
  6. Step 6: Final answer
    x = 67,116.18

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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.