Home / 100,066.14-138,089.75-54,743.00

Finding the Fourth Proportional to 100,066.14, 138,089.75 and 54,743.00

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Solution

The fourth proportional to 100,066.14, 138,089.75 and 54,743.00 is: 75,544.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,066.14 : 138,089.75 = 54,743.00 : x
  2. Step 2: Convert to fraction form
    100,066.14/138,089.75 = 54,743.00/x
  3. Step 3: Cross multiply
    100,066.14x = 138,089.75 × 54,743.00
  4. Step 4: Simplify right side
    100,066.14x = 7,559,446,220.09
  5. Step 5: Solve for x
    x = 7,559,446,220.09/100,066.14
  6. Step 6: Final answer
    x = 75,544.50

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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.