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Finding the Fourth Proportional to 160,447.81, 221,409.55 and 87,836.80

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Solution

The fourth proportional to 160,447.81, 221,409.55 and 87,836.80 is: 121,210.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,447.81 : 221,409.55 = 87,836.80 : x
  2. Step 2: Convert to fraction form
    160,447.81/221,409.55 = 87,836.80/x
  3. Step 3: Cross multiply
    160,447.81x = 221,409.55 × 87,836.80
  4. Step 4: Simplify right side
    160,447.81x = 19,447,906,361.44
  5. Step 5: Solve for x
    x = 19,447,906,361.44/160,447.81
  6. Step 6: Final answer
    x = 121,210.17

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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.