Home / 221,113.47-305,145.06-120,511.47

Finding the Fourth Proportional to 221,113.47, 305,145.06 and 120,511.47

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Solution

The fourth proportional to 221,113.47, 305,145.06 and 120,511.47 is: 166,310.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,113.47 : 305,145.06 = 120,511.47 : x
  2. Step 2: Convert to fraction form
    221,113.47/305,145.06 = 120,511.47/x
  3. Step 3: Cross multiply
    221,113.47x = 305,145.06 × 120,511.47
  4. Step 4: Simplify right side
    221,113.47x = 36,773,479,743.84
  5. Step 5: Solve for x
    x = 36,773,479,743.84/221,113.47
  6. Step 6: Final answer
    x = 166,310.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.