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Finding the Fourth Proportional to 118,666.53, 163,759.41 and 64,218.60

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Solution

The fourth proportional to 118,666.53, 163,759.41 and 64,218.60 is: 88,621.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,666.53 : 163,759.41 = 64,218.60 : x
  2. Step 2: Convert to fraction form
    118,666.53/163,759.41 = 64,218.60/x
  3. Step 3: Cross multiply
    118,666.53x = 163,759.41 × 64,218.60
  4. Step 4: Simplify right side
    118,666.53x = 10,516,400,047.03
  5. Step 5: Solve for x
    x = 10,516,400,047.03/118,666.53
  6. Step 6: Final answer
    x = 88,621.45

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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.