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Finding the Fourth Proportional to 118,695.80, 163,794.06 and 64,970.64

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Solution

The fourth proportional to 118,695.80, 163,794.06 and 64,970.64 is: 89,656.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,695.80 : 163,794.06 = 64,970.64 : x
  2. Step 2: Convert to fraction form
    118,695.80/163,794.06 = 64,970.64/x
  3. Step 3: Cross multiply
    118,695.80x = 163,794.06 × 64,970.64
  4. Step 4: Simplify right side
    118,695.80x = 10,641,804,906.40
  5. Step 5: Solve for x
    x = 10,641,804,906.40/118,695.80
  6. Step 6: Final answer
    x = 89,656.12

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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.