Home / 102,905.65-142,016.39-57,588.85

Finding the Fourth Proportional to 102,905.65, 142,016.39 and 57,588.85

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Solution

The fourth proportional to 102,905.65, 142,016.39 and 57,588.85 is: 79,476.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,905.65 : 142,016.39 = 57,588.85 : x
  2. Step 2: Convert to fraction form
    102,905.65/142,016.39 = 57,588.85/x
  3. Step 3: Cross multiply
    102,905.65x = 142,016.39 × 57,588.85
  4. Step 4: Simplify right side
    102,905.65x = 8,178,560,581.25
  5. Step 5: Solve for x
    x = 8,178,560,581.25/102,905.65
  6. Step 6: Final answer
    x = 79,476.30

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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.