Home / 154,114.61-212,673.92-86,131.85

Finding the Fourth Proportional to 154,114.61, 212,673.92 and 86,131.85

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Solution

The fourth proportional to 154,114.61, 212,673.92 and 86,131.85 is: 118,859.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,114.61 : 212,673.92 = 86,131.85 : x
  2. Step 2: Convert to fraction form
    154,114.61/212,673.92 = 86,131.85/x
  3. Step 3: Cross multiply
    154,114.61x = 212,673.92 × 86,131.85
  4. Step 4: Simplify right side
    154,114.61x = 18,317,996,682.32
  5. Step 5: Solve for x
    x = 18,317,996,682.32/154,114.61
  6. Step 6: Final answer
    x = 118,859.58

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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.