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Finding the Fourth Proportional to 103,285.40, 154,928.10 and 56,046.20

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Solution

The fourth proportional to 103,285.40, 154,928.10 and 56,046.20 is: 84,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,285.40 : 154,928.10 = 56,046.20 : x
  2. Step 2: Convert to fraction form
    103,285.40/154,928.10 = 56,046.20/x
  3. Step 3: Cross multiply
    103,285.40x = 154,928.10 × 56,046.20
  4. Step 4: Simplify right side
    103,285.40x = 8,683,131,278.22
  5. Step 5: Solve for x
    x = 8,683,131,278.22/103,285.40
  6. Step 6: Final answer
    x = 84,069.30

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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.