Home / 123,209.03-185,108.79-78,922.28

Finding the Fourth Proportional to 123,209.03, 185,108.79 and 78,922.28

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Solution

The fourth proportional to 123,209.03, 185,108.79 and 78,922.28 is: 118,572.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,209.03 : 185,108.79 = 78,922.28 : x
  2. Step 2: Convert to fraction form
    123,209.03/185,108.79 = 78,922.28/x
  3. Step 3: Cross multiply
    123,209.03x = 185,108.79 × 78,922.28
  4. Step 4: Simplify right side
    123,209.03x = 14,609,207,847.67
  5. Step 5: Solve for x
    x = 14,609,207,847.67/123,209.03
  6. Step 6: Final answer
    x = 118,572.54

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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.