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Finding the Fourth Proportional to 118,690, 163,810.52 and 67,702.84

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Solution

The fourth proportional to 118,690, 163,810.52 and 67,702.84 is: 93,440.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,690 : 163,810.52 = 67,702.84 : x
  2. Step 2: Convert to fraction form
    118,690/163,810.52 = 67,702.84/x
  3. Step 3: Cross multiply
    118,690x = 163,810.52 × 67,702.84
  4. Step 4: Simplify right side
    118,690x = 11,090,437,425.88
  5. Step 5: Solve for x
    x = 11,090,437,425.88/118,690
  6. Step 6: Final answer
    x = 93,440.37

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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.