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Finding the Fourth Proportional to 118,287.63, 163,240.80 and 64,575.54

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Solution

The fourth proportional to 118,287.63, 163,240.80 and 64,575.54 is: 89,116.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,287.63 : 163,240.80 = 64,575.54 : x
  2. Step 2: Convert to fraction form
    118,287.63/163,240.80 = 64,575.54/x
  3. Step 3: Cross multiply
    118,287.63x = 163,240.80 × 64,575.54
  4. Step 4: Simplify right side
    118,287.63x = 10,541,362,810.03
  5. Step 5: Solve for x
    x = 10,541,362,810.03/118,287.63
  6. Step 6: Final answer
    x = 89,116.36

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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.