Home / 128,763.67-193,145.60-40,017.24

Finding the Fourth Proportional to 128,763.67, 193,145.60 and 40,017.24

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Solution

The fourth proportional to 128,763.67, 193,145.60 and 40,017.24 is: 60,025.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,763.67 : 193,145.60 = 40,017.24 : x
  2. Step 2: Convert to fraction form
    128,763.67/193,145.60 = 40,017.24/x
  3. Step 3: Cross multiply
    128,763.67x = 193,145.60 × 40,017.24
  4. Step 4: Simplify right side
    128,763.67x = 7,729,153,830.14
  5. Step 5: Solve for x
    x = 7,729,153,830.14/128,763.67
  6. Step 6: Final answer
    x = 60,025.89

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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.