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Finding the Fourth Proportional to 118,485.66, 163,509.84 and 64,770.70

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Solution

The fourth proportional to 118,485.66, 163,509.84 and 64,770.70 is: 89,383.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,485.66 : 163,509.84 = 64,770.70 : x
  2. Step 2: Convert to fraction form
    118,485.66/163,509.84 = 64,770.70/x
  3. Step 3: Cross multiply
    118,485.66x = 163,509.84 × 64,770.70
  4. Step 4: Simplify right side
    118,485.66x = 10,590,646,793.69
  5. Step 5: Solve for x
    x = 10,590,646,793.69/118,485.66
  6. Step 6: Final answer
    x = 89,383.36

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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.