Home / 282,123.36-423,174.12-71,766.78

Finding the Fourth Proportional to 282,123.36, 423,174.12 and 71,766.78

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Solution

The fourth proportional to 282,123.36, 423,174.12 and 71,766.78 is: 107,647.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,123.36 : 423,174.12 = 71,766.78 : x
  2. Step 2: Convert to fraction form
    282,123.36/423,174.12 = 71,766.78/x
  3. Step 3: Cross multiply
    282,123.36x = 423,174.12 × 71,766.78
  4. Step 4: Simplify right side
    282,123.36x = 30,369,843,971.73
  5. Step 5: Solve for x
    x = 30,369,843,971.73/282,123.36
  6. Step 6: Final answer
    x = 107,647.39

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1.5x scale

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.