Home / 154,653.60-213,436.80-86,670.24

Finding the Fourth Proportional to 154,653.60, 213,436.80 and 86,670.24

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Solution

The fourth proportional to 154,653.60, 213,436.80 and 86,670.24 is: 119,613.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,653.60 : 213,436.80 = 86,670.24 : x
  2. Step 2: Convert to fraction form
    154,653.60/213,436.80 = 86,670.24/x
  3. Step 3: Cross multiply
    154,653.60x = 213,436.80 × 86,670.24
  4. Step 4: Simplify right side
    154,653.60x = 18,498,618,680.83
  5. Step 5: Solve for x
    x = 18,498,618,680.83/154,653.60
  6. Step 6: Final answer
    x = 119,613.24

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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.