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Finding the Fourth Proportional to 118,655.81, 163,712.59 and 67,649.95

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Solution

The fourth proportional to 118,655.81, 163,712.59 and 67,649.95 is: 93,338.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,655.81 : 163,712.59 = 67,649.95 : x
  2. Step 2: Convert to fraction form
    118,655.81/163,712.59 = 67,649.95/x
  3. Step 3: Cross multiply
    118,655.81x = 163,712.59 × 67,649.95
  4. Step 4: Simplify right side
    118,655.81x = 11,075,147,371.06
  5. Step 5: Solve for x
    x = 11,075,147,371.06/118,655.81
  6. Step 6: Final answer
    x = 93,338.43

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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.