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Finding the Fourth Proportional to 118,729.89, 163,841.13 and 65,004.51

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Solution

The fourth proportional to 118,729.89, 163,841.13 and 65,004.51 is: 89,702.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,729.89 : 163,841.13 = 65,004.51 : x
  2. Step 2: Convert to fraction form
    118,729.89/163,841.13 = 65,004.51/x
  3. Step 3: Cross multiply
    118,729.89x = 163,841.13 × 65,004.51
  4. Step 4: Simplify right side
    118,729.89x = 10,650,412,617.26
  5. Step 5: Solve for x
    x = 10,650,412,617.26/118,729.89
  6. Step 6: Final answer
    x = 89,702.88

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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.