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Finding the Fourth Proportional to 118,729.80, 163,847.10 and 65,018.16

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Solution

The fourth proportional to 118,729.80, 163,847.10 and 65,018.16 is: 89,725.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,729.80 : 163,847.10 = 65,018.16 : x
  2. Step 2: Convert to fraction form
    118,729.80/163,847.10 = 65,018.16/x
  3. Step 3: Cross multiply
    118,729.80x = 163,847.10 × 65,018.16
  4. Step 4: Simplify right side
    118,729.80x = 10,653,036,963.34
  5. Step 5: Solve for x
    x = 10,653,036,963.34/118,729.80
  6. Step 6: Final answer
    x = 89,725.05

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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.