Home / 120,342.81-166,074.39-66,628.79

Finding the Fourth Proportional to 120,342.81, 166,074.39 and 66,628.79

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Solution

The fourth proportional to 120,342.81, 166,074.39 and 66,628.79 is: 91,948.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,342.81 : 166,074.39 = 66,628.79 : x
  2. Step 2: Convert to fraction form
    120,342.81/166,074.39 = 66,628.79/x
  3. Step 3: Cross multiply
    120,342.81x = 166,074.39 × 66,628.79
  4. Step 4: Simplify right side
    120,342.81x = 11,065,334,825.32
  5. Step 5: Solve for x
    x = 11,065,334,825.32/120,342.81
  6. Step 6: Final answer
    x = 91,948.45

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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.