Home / 154,000.77-212,518.80-86,018.70

Finding the Fourth Proportional to 154,000.77, 212,518.80 and 86,018.70

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Solution

The fourth proportional to 154,000.77, 212,518.80 and 86,018.70 is: 118,704.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,000.77 : 212,518.80 = 86,018.70 : x
  2. Step 2: Convert to fraction form
    154,000.77/212,518.80 = 86,018.70/x
  3. Step 3: Cross multiply
    154,000.77x = 212,518.80 × 86,018.70
  4. Step 4: Simplify right side
    154,000.77x = 18,280,589,408.87
  5. Step 5: Solve for x
    x = 18,280,589,408.87/154,000.77
  6. Step 6: Final answer
    x = 118,704.54

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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.