Home / 128,747.52-193,173.12-45,699.84

Finding the Fourth Proportional to 128,747.52, 193,173.12 and 45,699.84

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Solution

The fourth proportional to 128,747.52, 193,173.12 and 45,699.84 is: 68,568.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,747.52 : 193,173.12 = 45,699.84 : x
  2. Step 2: Convert to fraction form
    128,747.52/193,173.12 = 45,699.84/x
  3. Step 3: Cross multiply
    128,747.52x = 193,173.12 × 45,699.84
  4. Step 4: Simplify right side
    128,747.52x = 8,827,980,676.30
  5. Step 5: Solve for x
    x = 8,827,980,676.30/128,747.52
  6. Step 6: Final answer
    x = 68,568.16

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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.