Home / 154,011.06-212,512.68-86,019.66

Finding the Fourth Proportional to 154,011.06, 212,512.68 and 86,019.66

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Solution

The fourth proportional to 154,011.06, 212,512.68 and 86,019.66 is: 118,694.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,011.06 : 212,512.68 = 86,019.66 : x
  2. Step 2: Convert to fraction form
    154,011.06/212,512.68 = 86,019.66/x
  3. Step 3: Cross multiply
    154,011.06x = 212,512.68 × 86,019.66
  4. Step 4: Simplify right side
    154,011.06x = 18,280,268,479.29
  5. Step 5: Solve for x
    x = 18,280,268,479.29/154,011.06
  6. Step 6: Final answer
    x = 118,694.52

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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.