Home / 130,892.45-180,626.80-79,990.39

Finding the Fourth Proportional to 130,892.45, 180,626.80 and 79,990.39

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Solution

The fourth proportional to 130,892.45, 180,626.80 and 79,990.39 is: 110,383.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,892.45 : 180,626.80 = 79,990.39 : x
  2. Step 2: Convert to fraction form
    130,892.45/180,626.80 = 79,990.39/x
  3. Step 3: Cross multiply
    130,892.45x = 180,626.80 × 79,990.39
  4. Step 4: Simplify right side
    130,892.45x = 14,448,408,176.45
  5. Step 5: Solve for x
    x = 14,448,408,176.45/130,892.45
  6. Step 6: Final answer
    x = 110,383.82

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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.