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Finding the Fourth Proportional to 118,646.61, 163,732.59 and 64,935.08

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Solution

The fourth proportional to 118,646.61, 163,732.59 and 64,935.08 is: 89,610.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,646.61 : 163,732.59 = 64,935.08 : x
  2. Step 2: Convert to fraction form
    118,646.61/163,732.59 = 64,935.08/x
  3. Step 3: Cross multiply
    118,646.61x = 163,732.59 × 64,935.08
  4. Step 4: Simplify right side
    118,646.61x = 10,631,989,546.59
  5. Step 5: Solve for x
    x = 10,631,989,546.59/118,646.61
  6. Step 6: Final answer
    x = 89,610.57

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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.