Home / 105,076.38-145,005.89-57,330.73

Finding the Fourth Proportional to 105,076.38, 145,005.89 and 57,330.73

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Solution

The fourth proportional to 105,076.38, 145,005.89 and 57,330.73 is: 79,116.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,076.38 : 145,005.89 = 57,330.73 : x
  2. Step 2: Convert to fraction form
    105,076.38/145,005.89 = 57,330.73/x
  3. Step 3: Cross multiply
    105,076.38x = 145,005.89 × 57,330.73
  4. Step 4: Simplify right side
    105,076.38x = 8,313,293,422.60
  5. Step 5: Solve for x
    x = 8,313,293,422.60/105,076.38
  6. Step 6: Final answer
    x = 79,116.67

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1.5x scale

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.