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Finding the Fourth Proportional to 128,793.37, 177,715.59 and 73,598.53

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Solution

The fourth proportional to 128,793.37, 177,715.59 and 73,598.53 is: 101,554.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,793.37 : 177,715.59 = 73,598.53 : x
  2. Step 2: Convert to fraction form
    128,793.37/177,715.59 = 73,598.53/x
  3. Step 3: Cross multiply
    128,793.37x = 177,715.59 × 73,598.53
  4. Step 4: Simplify right side
    128,793.37x = 13,079,606,182.08
  5. Step 5: Solve for x
    x = 13,079,606,182.08/128,793.37
  6. Step 6: Final answer
    x = 101,554.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.