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Finding the Fourth Proportional to 124,858.70, 187,288.05 and 82,868.30

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Solution

The fourth proportional to 124,858.70, 187,288.05 and 82,868.30 is: 124,302.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,858.70 : 187,288.05 = 82,868.30 : x
  2. Step 2: Convert to fraction form
    124,858.70/187,288.05 = 82,868.30/x
  3. Step 3: Cross multiply
    124,858.70x = 187,288.05 × 82,868.30
  4. Step 4: Simplify right side
    124,858.70x = 15,520,242,313.82
  5. Step 5: Solve for x
    x = 15,520,242,313.82/124,858.70
  6. Step 6: Final answer
    x = 124,302.45

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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.