Home / 154,261.94-212,880.86-86,278.64

Finding the Fourth Proportional to 154,261.94, 212,880.86 and 86,278.64

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Solution

The fourth proportional to 154,261.94, 212,880.86 and 86,278.64 is: 119,064.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,261.94 : 212,880.86 = 86,278.64 : x
  2. Step 2: Convert to fraction form
    154,261.94/212,880.86 = 86,278.64/x
  3. Step 3: Cross multiply
    154,261.94x = 212,880.86 × 86,278.64
  4. Step 4: Simplify right side
    154,261.94x = 18,367,071,082.83
  5. Step 5: Solve for x
    x = 18,367,071,082.83/154,261.94
  6. Step 6: Final answer
    x = 119,064.18

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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.