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Finding the Fourth Proportional to 118,690.70, 163,797.04 and 64,975.72

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Solution

The fourth proportional to 118,690.70, 163,797.04 and 64,975.72 is: 89,668.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,690.70 : 163,797.04 = 64,975.72 : x
  2. Step 2: Convert to fraction form
    118,690.70/163,797.04 = 64,975.72/x
  3. Step 3: Cross multiply
    118,690.70x = 163,797.04 × 64,975.72
  4. Step 4: Simplify right side
    118,690.70x = 10,642,830,607.87
  5. Step 5: Solve for x
    x = 10,642,830,607.87/118,690.70
  6. Step 6: Final answer
    x = 89,668.61

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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.