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Finding the Fourth Proportional to 118,376.78, 163,364.76 and 68,075.78

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Solution

The fourth proportional to 118,376.78, 163,364.76 and 68,075.78 is: 93,947.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,376.78 : 163,364.76 = 68,075.78 : x
  2. Step 2: Convert to fraction form
    118,376.78/163,364.76 = 68,075.78/x
  3. Step 3: Cross multiply
    118,376.78x = 163,364.76 × 68,075.78
  4. Step 4: Simplify right side
    118,376.78x = 11,121,183,461.51
  5. Step 5: Solve for x
    x = 11,121,183,461.51/118,376.78
  6. Step 6: Final answer
    x = 93,947.34

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1.5x scale

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.