Home / 154,639.46-213,420.12-86,674.76

Finding the Fourth Proportional to 154,639.46, 213,420.12 and 86,674.76

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Solution

The fourth proportional to 154,639.46, 213,420.12 and 86,674.76 is: 119,621.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,639.46 : 213,420.12 = 86,674.76 : x
  2. Step 2: Convert to fraction form
    154,639.46/213,420.12 = 86,674.76/x
  3. Step 3: Cross multiply
    154,639.46x = 213,420.12 × 86,674.76
  4. Step 4: Simplify right side
    154,639.46x = 18,498,137,680.17
  5. Step 5: Solve for x
    x = 18,498,137,680.17/154,639.46
  6. Step 6: Final answer
    x = 119,621.07

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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.