Home / 154,209.52-212,804.80-86,226.60

Finding the Fourth Proportional to 154,209.52, 212,804.80 and 86,226.60

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Solution

The fourth proportional to 154,209.52, 212,804.80 and 86,226.60 is: 118,990.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,209.52 : 212,804.80 = 86,226.60 : x
  2. Step 2: Convert to fraction form
    154,209.52/212,804.80 = 86,226.60/x
  3. Step 3: Cross multiply
    154,209.52x = 212,804.80 × 86,226.60
  4. Step 4: Simplify right side
    154,209.52x = 18,349,434,367.68
  5. Step 5: Solve for x
    x = 18,349,434,367.68/154,209.52
  6. Step 6: Final answer
    x = 118,990.28

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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.