Home / 129,905.37-179,271.63-76,191.84

Finding the Fourth Proportional to 129,905.37, 179,271.63 and 76,191.84

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Solution

The fourth proportional to 129,905.37, 179,271.63 and 76,191.84 is: 105,146.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,905.37 : 179,271.63 = 76,191.84 : x
  2. Step 2: Convert to fraction form
    129,905.37/179,271.63 = 76,191.84/x
  3. Step 3: Cross multiply
    129,905.37x = 179,271.63 × 76,191.84
  4. Step 4: Simplify right side
    129,905.37x = 13,659,035,349.50
  5. Step 5: Solve for x
    x = 13,659,035,349.50/129,905.37
  6. Step 6: Final answer
    x = 105,146.04

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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.