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Finding the Fourth Proportional to 146,120.40, 219,187.80 and 76,136.40

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Solution

The fourth proportional to 146,120.40, 219,187.80 and 76,136.40 is: 114,208.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,120.40 : 219,187.80 = 76,136.40 : x
  2. Step 2: Convert to fraction form
    146,120.40/219,187.80 = 76,136.40/x
  3. Step 3: Cross multiply
    146,120.40x = 219,187.80 × 76,136.40
  4. Step 4: Simplify right side
    146,120.40x = 16,688,170,015.92
  5. Step 5: Solve for x
    x = 16,688,170,015.92/146,120.40
  6. Step 6: Final answer
    x = 114,208.35

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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.