Home / 130,892.47-180,626.79-79,990.38

Finding the Fourth Proportional to 130,892.47, 180,626.79 and 79,990.38

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Solution

The fourth proportional to 130,892.47, 180,626.79 and 79,990.38 is: 110,383.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,892.47 : 180,626.79 = 79,990.38 : x
  2. Step 2: Convert to fraction form
    130,892.47/180,626.79 = 79,990.38/x
  3. Step 3: Cross multiply
    130,892.47x = 180,626.79 × 79,990.38
  4. Step 4: Simplify right side
    130,892.47x = 14,448,405,570.28
  5. Step 5: Solve for x
    x = 14,448,405,570.28/130,892.47
  6. Step 6: Final answer
    x = 110,383.78

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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.