Home / 151,559.10-209,116.08-91,120.14

Finding the Fourth Proportional to 151,559.10, 209,116.08 and 91,120.14

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Solution

The fourth proportional to 151,559.10, 209,116.08 and 91,120.14 is: 125,724.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,559.10 : 209,116.08 = 91,120.14 : x
  2. Step 2: Convert to fraction form
    151,559.10/209,116.08 = 91,120.14/x
  3. Step 3: Cross multiply
    151,559.10x = 209,116.08 × 91,120.14
  4. Step 4: Simplify right side
    151,559.10x = 19,054,686,485.85
  5. Step 5: Solve for x
    x = 19,054,686,485.85/151,559.10
  6. Step 6: Final answer
    x = 125,724.46

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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.