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Finding the Fourth Proportional to 118,560.42, 163,611.08 and 64,845.28

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Solution

The fourth proportional to 118,560.42, 163,611.08 and 64,845.28 is: 89,485.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,560.42 : 163,611.08 = 64,845.28 : x
  2. Step 2: Convert to fraction form
    118,560.42/163,611.08 = 64,845.28/x
  3. Step 3: Cross multiply
    118,560.42x = 163,611.08 × 64,845.28
  4. Step 4: Simplify right side
    118,560.42x = 10,609,406,293.70
  5. Step 5: Solve for x
    x = 10,609,406,293.70/118,560.42
  6. Step 6: Final answer
    x = 89,485.23

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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.