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Finding the Fourth Proportional to 160,883.64, 221,885.64 and 120,686.64

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Solution

The fourth proportional to 160,883.64, 221,885.64 and 120,686.64 is: 166,447.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,883.64 : 221,885.64 = 120,686.64 : x
  2. Step 2: Convert to fraction form
    160,883.64/221,885.64 = 120,686.64/x
  3. Step 3: Cross multiply
    160,883.64x = 221,885.64 × 120,686.64
  4. Step 4: Simplify right side
    160,883.64x = 26,778,632,355.85
  5. Step 5: Solve for x
    x = 26,778,632,355.85/160,883.64
  6. Step 6: Final answer
    x = 166,447.21

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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.