Home / 154,000.47-212,518.39-86,018.43

Finding the Fourth Proportional to 154,000.47, 212,518.39 and 86,018.43

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Solution

The fourth proportional to 154,000.47, 212,518.39 and 86,018.43 is: 118,704.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,000.47 : 212,518.39 = 86,018.43 : x
  2. Step 2: Convert to fraction form
    154,000.47/212,518.39 = 86,018.43/x
  3. Step 3: Cross multiply
    154,000.47x = 212,518.39 × 86,018.43
  4. Step 4: Simplify right side
    154,000.47x = 18,280,498,038.88
  5. Step 5: Solve for x
    x = 18,280,498,038.88/154,000.47
  6. Step 6: Final answer
    x = 118,704.17

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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.