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Finding the Fourth Proportional to 118,615.26, 163,685.70 and 64,899.12

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Solution

The fourth proportional to 118,615.26, 163,685.70 and 64,899.12 is: 89,558.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,615.26 : 163,685.70 = 64,899.12 : x
  2. Step 2: Convert to fraction form
    118,615.26/163,685.70 = 64,899.12/x
  3. Step 3: Cross multiply
    118,615.26x = 163,685.70 × 64,899.12
  4. Step 4: Simplify right side
    118,615.26x = 10,623,057,886.58
  5. Step 5: Solve for x
    x = 10,623,057,886.58/118,615.26
  6. Step 6: Final answer
    x = 89,558.95

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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.