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Finding the Fourth Proportional to 124,857.20, 187,285.80 and 82,866.80

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Solution

The fourth proportional to 124,857.20, 187,285.80 and 82,866.80 is: 124,300.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,857.20 : 187,285.80 = 82,866.80 : x
  2. Step 2: Convert to fraction form
    124,857.20/187,285.80 = 82,866.80/x
  3. Step 3: Cross multiply
    124,857.20x = 187,285.80 × 82,866.80
  4. Step 4: Simplify right side
    124,857.20x = 15,519,774,931.44
  5. Step 5: Solve for x
    x = 15,519,774,931.44/124,857.20
  6. Step 6: Final answer
    x = 124,300.20

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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.