Home / 99,020.54-148,176-85,739.38

Finding the Fourth Proportional to 99,020.54, 148,176 and 85,739.38

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Solution

The fourth proportional to 99,020.54, 148,176 and 85,739.38 is: 128,301.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,020.54 : 148,176 = 85,739.38 : x
  2. Step 2: Convert to fraction form
    99,020.54/148,176 = 85,739.38/x
  3. Step 3: Cross multiply
    99,020.54x = 148,176 × 85,739.38
  4. Step 4: Simplify right side
    99,020.54x = 12,704,518,000.44
  5. Step 5: Solve for x
    x = 12,704,518,000.44/99,020.54
  6. Step 6: Final answer
    x = 128,301.84

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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.