Home / 154,003.58-212,520.54-86,018.56

Finding the Fourth Proportional to 154,003.58, 212,520.54 and 86,018.56

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Solution

The fourth proportional to 154,003.58, 212,520.54 and 86,018.56 is: 118,703.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,003.58 : 212,520.54 = 86,018.56 : x
  2. Step 2: Convert to fraction form
    154,003.58/212,520.54 = 86,018.56/x
  3. Step 3: Cross multiply
    154,003.58x = 212,520.54 × 86,018.56
  4. Step 4: Simplify right side
    154,003.58x = 18,280,710,612.49
  5. Step 5: Solve for x
    x = 18,280,710,612.49/154,003.58
  6. Step 6: Final answer
    x = 118,703.15

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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.