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Finding the Fourth Proportional to 118,903.65, 163,964.57 and 83,080.59

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Solution

The fourth proportional to 118,903.65, 163,964.57 and 83,080.59 is: 114,565.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,903.65 : 163,964.57 = 83,080.59 : x
  2. Step 2: Convert to fraction form
    118,903.65/163,964.57 = 83,080.59/x
  3. Step 3: Cross multiply
    118,903.65x = 163,964.57 × 83,080.59
  4. Step 4: Simplify right side
    118,903.65x = 13,622,272,799.29
  5. Step 5: Solve for x
    x = 13,622,272,799.29/118,903.65
  6. Step 6: Final answer
    x = 114,565.64

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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.