Home / 154,116.40-212,679.32-86,136.24

Finding the Fourth Proportional to 154,116.40, 212,679.32 and 86,136.24

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Solution

The fourth proportional to 154,116.40, 212,679.32 and 86,136.24 is: 118,867.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,116.40 : 212,679.32 = 86,136.24 : x
  2. Step 2: Convert to fraction form
    154,116.40/212,679.32 = 86,136.24/x
  3. Step 3: Cross multiply
    154,116.40x = 212,679.32 × 86,136.24
  4. Step 4: Simplify right side
    154,116.40x = 18,319,396,950.56
  5. Step 5: Solve for x
    x = 18,319,396,950.56/154,116.40
  6. Step 6: Final answer
    x = 118,867.28

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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.