Home / 120,340.28-166,075.71-66,631.21

Finding the Fourth Proportional to 120,340.28, 166,075.71 and 66,631.21

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Solution

The fourth proportional to 120,340.28, 166,075.71 and 66,631.21 is: 91,954.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,340.28 : 166,075.71 = 66,631.21 : x
  2. Step 2: Convert to fraction form
    120,340.28/166,075.71 = 66,631.21/x
  3. Step 3: Cross multiply
    120,340.28x = 166,075.71 × 66,631.21
  4. Step 4: Simplify right side
    120,340.28x = 11,065,825,508.91
  5. Step 5: Solve for x
    x = 11,065,825,508.91/120,340.28
  6. Step 6: Final answer
    x = 91,954.46

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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.