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Finding the Fourth Proportional to 118,641.09, 163,743.12 and 67,653.93

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Solution

The fourth proportional to 118,641.09, 163,743.12 and 67,653.93 is: 93,372.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,641.09 : 163,743.12 = 67,653.93 : x
  2. Step 2: Convert to fraction form
    118,641.09/163,743.12 = 67,653.93/x
  3. Step 3: Cross multiply
    118,641.09x = 163,743.12 × 67,653.93
  4. Step 4: Simplify right side
    118,641.09x = 11,077,865,578.46
  5. Step 5: Solve for x
    x = 11,077,865,578.46/118,641.09
  6. Step 6: Final answer
    x = 93,372.92

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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.