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Finding the Fourth Proportional to 118,361.70, 163,340.04 and 64,645.74

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Solution

The fourth proportional to 118,361.70, 163,340.04 and 64,645.74 is: 89,211.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,361.70 : 163,340.04 = 64,645.74 : x
  2. Step 2: Convert to fraction form
    118,361.70/163,340.04 = 64,645.74/x
  3. Step 3: Cross multiply
    118,361.70x = 163,340.04 × 64,645.74
  4. Step 4: Simplify right side
    118,361.70x = 10,559,237,757.43
  5. Step 5: Solve for x
    x = 10,559,237,757.43/118,361.70
  6. Step 6: Final answer
    x = 89,211.61

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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.