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Finding the Fourth Proportional to 104,103.40, 156,039.90 and 57,389.80

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Solution

The fourth proportional to 104,103.40, 156,039.90 and 57,389.80 is: 86,021.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,103.40 : 156,039.90 = 57,389.80 : x
  2. Step 2: Convert to fraction form
    104,103.40/156,039.90 = 57,389.80/x
  3. Step 3: Cross multiply
    104,103.40x = 156,039.90 × 57,389.80
  4. Step 4: Simplify right side
    104,103.40x = 8,955,098,653.02
  5. Step 5: Solve for x
    x = 8,955,098,653.02/104,103.40
  6. Step 6: Final answer
    x = 86,021.19

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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.