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Finding the Fourth Proportional to 118,634.21, 163,715.21 and 64,919.24

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Solution

The fourth proportional to 118,634.21, 163,715.21 and 64,919.24 is: 89,588.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,634.21 : 163,715.21 = 64,919.24 : x
  2. Step 2: Convert to fraction form
    118,634.21/163,715.21 = 64,919.24/x
  3. Step 3: Cross multiply
    118,634.21x = 163,715.21 × 64,919.24
  4. Step 4: Simplify right side
    118,634.21x = 10,628,265,866.47
  5. Step 5: Solve for x
    x = 10,628,265,866.47/118,634.21
  6. Step 6: Final answer
    x = 89,588.54

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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.