Home / 128,829.12-193,311.24-93,581.64

Finding the Fourth Proportional to 128,829.12, 193,311.24 and 93,581.64

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Solution

The fourth proportional to 128,829.12, 193,311.24 and 93,581.64 is: 140,421.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,829.12 : 193,311.24 = 93,581.64 : x
  2. Step 2: Convert to fraction form
    128,829.12/193,311.24 = 93,581.64/x
  3. Step 3: Cross multiply
    128,829.12x = 193,311.24 × 93,581.64
  4. Step 4: Simplify right side
    128,829.12x = 18,090,382,869.63
  5. Step 5: Solve for x
    x = 18,090,382,869.63/128,829.12
  6. Step 6: Final answer
    x = 140,421.54

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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.