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Finding the Fourth Proportional to 147,902.60, 221,993.10 and 77,832.20

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Solution

The fourth proportional to 147,902.60, 221,993.10 and 77,832.20 is: 116,821.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,902.60 : 221,993.10 = 77,832.20 : x
  2. Step 2: Convert to fraction form
    147,902.60/221,993.10 = 77,832.20/x
  3. Step 3: Cross multiply
    147,902.60x = 221,993.10 × 77,832.20
  4. Step 4: Simplify right side
    147,902.60x = 17,278,211,357.82
  5. Step 5: Solve for x
    x = 17,278,211,357.82/147,902.60
  6. Step 6: Final answer
    x = 116,821.55

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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.