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Finding the Fourth Proportional to 118,702.65, 163,811.73 and 73,379.51

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Solution

The fourth proportional to 118,702.65, 163,811.73 and 73,379.51 is: 101,265.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,702.65 : 163,811.73 = 73,379.51 : x
  2. Step 2: Convert to fraction form
    118,702.65/163,811.73 = 73,379.51/x
  3. Step 3: Cross multiply
    118,702.65x = 163,811.73 × 73,379.51
  4. Step 4: Simplify right side
    118,702.65x = 12,020,424,479.65
  5. Step 5: Solve for x
    x = 12,020,424,479.65/118,702.65
  6. Step 6: Final answer
    x = 101,265.01

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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.