Home / 105,091.81-144,988.79-80,900.17

Finding the Fourth Proportional to 105,091.81, 144,988.79 and 80,900.17

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Solution

The fourth proportional to 105,091.81, 144,988.79 and 80,900.17 is: 111,613.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,091.81 : 144,988.79 = 80,900.17 : x
  2. Step 2: Convert to fraction form
    105,091.81/144,988.79 = 80,900.17/x
  3. Step 3: Cross multiply
    105,091.81x = 144,988.79 × 80,900.17
  4. Step 4: Simplify right side
    105,091.81x = 11,729,616,992.12
  5. Step 5: Solve for x
    x = 11,729,616,992.12/105,091.81
  6. Step 6: Final answer
    x = 111,613.05

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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.