Home / 137,816.89-190,133.04-79,635.18

Finding the Fourth Proportional to 137,816.89, 190,133.04 and 79,635.18

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Solution

The fourth proportional to 137,816.89, 190,133.04 and 79,635.18 is: 109,865.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,816.89 : 190,133.04 = 79,635.18 : x
  2. Step 2: Convert to fraction form
    137,816.89/190,133.04 = 79,635.18/x
  3. Step 3: Cross multiply
    137,816.89x = 190,133.04 × 79,635.18
  4. Step 4: Simplify right side
    137,816.89x = 15,141,279,428.03
  5. Step 5: Solve for x
    x = 15,141,279,428.03/137,816.89
  6. Step 6: Final answer
    x = 109,865.19

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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.