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Finding the Fourth Proportional to 196,136.80, 294,059.40 and 107,490.40

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Solution

The fourth proportional to 196,136.80, 294,059.40 and 107,490.40 is: 161,155.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,136.80 : 294,059.40 = 107,490.40 : x
  2. Step 2: Convert to fraction form
    196,136.80/294,059.40 = 107,490.40/x
  3. Step 3: Cross multiply
    196,136.80x = 294,059.40 × 107,490.40
  4. Step 4: Simplify right side
    196,136.80x = 31,608,562,529.76
  5. Step 5: Solve for x
    x = 31,608,562,529.76/196,136.80
  6. Step 6: Final answer
    x = 161,155.70

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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.