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Finding the Fourth Proportional to 220,123.80, 330,185.70 and 102,025.80

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Solution

The fourth proportional to 220,123.80, 330,185.70 and 102,025.80 is: 153,038.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,123.80 : 330,185.70 = 102,025.80 : x
  2. Step 2: Convert to fraction form
    220,123.80/330,185.70 = 102,025.80/x
  3. Step 3: Cross multiply
    220,123.80x = 330,185.70 × 102,025.80
  4. Step 4: Simplify right side
    220,123.80x = 33,687,460,191.06
  5. Step 5: Solve for x
    x = 33,687,460,191.06/220,123.80
  6. Step 6: Final answer
    x = 153,038.70

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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.