Home / 286,123.25-429,261.42-99,134.75

Finding the Fourth Proportional to 286,123.25, 429,261.42 and 99,134.75

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Solution

The fourth proportional to 286,123.25, 429,261.42 and 99,134.75 is: 148,728.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,123.25 : 429,261.42 = 99,134.75 : x
  2. Step 2: Convert to fraction form
    286,123.25/429,261.42 = 99,134.75/x
  3. Step 3: Cross multiply
    286,123.25x = 429,261.42 × 99,134.75
  4. Step 4: Simplify right side
    286,123.25x = 42,554,723,556.35
  5. Step 5: Solve for x
    x = 42,554,723,556.35/286,123.25
  6. Step 6: Final answer
    x = 148,728.65

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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.