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Finding the Fourth Proportional to 98,794.80, 148,192.20 and 79,111.80

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Solution

The fourth proportional to 98,794.80, 148,192.20 and 79,111.80 is: 118,667.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,794.80 : 148,192.20 = 79,111.80 : x
  2. Step 2: Convert to fraction form
    98,794.80/148,192.20 = 79,111.80/x
  3. Step 3: Cross multiply
    98,794.80x = 148,192.20 × 79,111.80
  4. Step 4: Simplify right side
    98,794.80x = 11,723,751,687.96
  5. Step 5: Solve for x
    x = 11,723,751,687.96/98,794.80
  6. Step 6: Final answer
    x = 118,667.70

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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.