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Finding the Fourth Proportional to 118,479.36, 163,376.64 and 73,689.60

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Solution

The fourth proportional to 118,479.36, 163,376.64 and 73,689.60 is: 101,613.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,479.36 : 163,376.64 = 73,689.60 : x
  2. Step 2: Convert to fraction form
    118,479.36/163,376.64 = 73,689.60/x
  3. Step 3: Cross multiply
    118,479.36x = 163,376.64 × 73,689.60
  4. Step 4: Simplify right side
    118,479.36x = 12,039,159,250.94
  5. Step 5: Solve for x
    x = 12,039,159,250.94/118,479.36
  6. Step 6: Final answer
    x = 101,613.98

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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.