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Finding the Fourth Proportional to 118,376.25, 163,364.10 and 68,075.25

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Solution

The fourth proportional to 118,376.25, 163,364.10 and 68,075.25 is: 93,946.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,376.25 : 163,364.10 = 68,075.25 : x
  2. Step 2: Convert to fraction form
    118,376.25/163,364.10 = 68,075.25/x
  3. Step 3: Cross multiply
    118,376.25x = 163,364.10 × 68,075.25
  4. Step 4: Simplify right side
    118,376.25x = 11,121,051,948.53
  5. Step 5: Solve for x
    x = 11,121,051,948.53/118,376.25
  6. Step 6: Final answer
    x = 93,946.65

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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.