Home / 137,805.04-190,191.75-84,121.30

Finding the Fourth Proportional to 137,805.04, 190,191.75 and 84,121.30

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Solution

The fourth proportional to 137,805.04, 190,191.75 and 84,121.30 is: 116,100.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,805.04 : 190,191.75 = 84,121.30 : x
  2. Step 2: Convert to fraction form
    137,805.04/190,191.75 = 84,121.30/x
  3. Step 3: Cross multiply
    137,805.04x = 190,191.75 × 84,121.30
  4. Step 4: Simplify right side
    137,805.04x = 15,999,177,259.28
  5. Step 5: Solve for x
    x = 15,999,177,259.28/137,805.04
  6. Step 6: Final answer
    x = 116,100.09

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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.