Home / 154,038.85-212,571.20-86,056.76

Finding the Fourth Proportional to 154,038.85, 212,571.20 and 86,056.76

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Solution

The fourth proportional to 154,038.85, 212,571.20 and 86,056.76 is: 118,756.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,038.85 : 212,571.20 = 86,056.76 : x
  2. Step 2: Convert to fraction form
    154,038.85/212,571.20 = 86,056.76/x
  3. Step 3: Cross multiply
    154,038.85x = 212,571.20 × 86,056.76
  4. Step 4: Simplify right side
    154,038.85x = 18,293,189,487.88
  5. Step 5: Solve for x
    x = 18,293,189,487.88/154,038.85
  6. Step 6: Final answer
    x = 118,756.99

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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.