Home / 154,149.12-212,698.57-86,144.35

Finding the Fourth Proportional to 154,149.12, 212,698.57 and 86,144.35

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Solution

The fourth proportional to 154,149.12, 212,698.57 and 86,144.35 is: 118,863.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,149.12 : 212,698.57 = 86,144.35 : x
  2. Step 2: Convert to fraction form
    154,149.12/212,698.57 = 86,144.35/x
  3. Step 3: Cross multiply
    154,149.12x = 212,698.57 × 86,144.35
  4. Step 4: Simplify right side
    154,149.12x = 18,322,779,627.86
  5. Step 5: Solve for x
    x = 18,322,779,627.86/154,149.12
  6. Step 6: Final answer
    x = 118,863.99

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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.