Home / 134,129.04-185,103.08-80,422.80

Finding the Fourth Proportional to 134,129.04, 185,103.08 and 80,422.80

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Solution

The fourth proportional to 134,129.04, 185,103.08 and 80,422.80 is: 110,986.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,129.04 : 185,103.08 = 80,422.80 : x
  2. Step 2: Convert to fraction form
    134,129.04/185,103.08 = 80,422.80/x
  3. Step 3: Cross multiply
    134,129.04x = 185,103.08 × 80,422.80
  4. Step 4: Simplify right side
    134,129.04x = 14,886,507,982.22
  5. Step 5: Solve for x
    x = 14,886,507,982.22/134,129.04
  6. Step 6: Final answer
    x = 110,986.46

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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.