Home / 106,438.70-146,830.43-66,137.15

Finding the Fourth Proportional to 106,438.70, 146,830.43 and 66,137.15

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Solution

The fourth proportional to 106,438.70, 146,830.43 and 66,137.15 is: 91,235.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,438.70 : 146,830.43 = 66,137.15 : x
  2. Step 2: Convert to fraction form
    106,438.70/146,830.43 = 66,137.15/x
  3. Step 3: Cross multiply
    106,438.70x = 146,830.43 × 66,137.15
  4. Step 4: Simplify right side
    106,438.70x = 9,710,945,108.64
  5. Step 5: Solve for x
    x = 9,710,945,108.64/106,438.70
  6. Step 6: Final answer
    x = 91,235.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.