Home / 118,967.12-164,203.37-80,790.40

Finding the Fourth Proportional to 118,967.12, 164,203.37 and 80,790.40

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Solution

The fourth proportional to 118,967.12, 164,203.37 and 80,790.40 is: 111,510.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,967.12 : 164,203.37 = 80,790.40 : x
  2. Step 2: Convert to fraction form
    118,967.12/164,203.37 = 80,790.40/x
  3. Step 3: Cross multiply
    118,967.12x = 164,203.37 × 80,790.40
  4. Step 4: Simplify right side
    118,967.12x = 13,266,055,943.65
  5. Step 5: Solve for x
    x = 13,266,055,943.65/118,967.12
  6. Step 6: Final answer
    x = 111,510.27

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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.