Home / 123,948.95-185,923.48-81,819.18

Finding the Fourth Proportional to 123,948.95, 185,923.48 and 81,819.18

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Solution

The fourth proportional to 123,948.95, 185,923.48 and 81,819.18 is: 122,728.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,948.95 : 185,923.48 = 81,819.18 : x
  2. Step 2: Convert to fraction form
    123,948.95/185,923.48 = 81,819.18/x
  3. Step 3: Cross multiply
    123,948.95x = 185,923.48 × 81,819.18
  4. Step 4: Simplify right side
    123,948.95x = 15,212,106,778.62
  5. Step 5: Solve for x
    x = 15,212,106,778.62/123,948.95
  6. Step 6: Final answer
    x = 122,728.81

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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.