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Finding the Fourth Proportional to 154,718.12, 213,494.92 and 91,052.12

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Solution

The fourth proportional to 154,718.12, 213,494.92 and 91,052.12 is: 125,642.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,718.12 : 213,494.92 = 91,052.12 : x
  2. Step 2: Convert to fraction form
    154,718.12/213,494.92 = 91,052.12/x
  3. Step 3: Cross multiply
    154,718.12x = 213,494.92 × 91,052.12
  4. Step 4: Simplify right side
    154,718.12x = 19,439,165,075.23
  5. Step 5: Solve for x
    x = 19,439,165,075.23/154,718.12
  6. Step 6: Final answer
    x = 125,642.46

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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.