Home / 154,012.03-212,522.75-86,019.57

Finding the Fourth Proportional to 154,012.03, 212,522.75 and 86,019.57

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Solution

The fourth proportional to 154,012.03, 212,522.75 and 86,019.57 is: 118,699.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,012.03 : 212,522.75 = 86,019.57 : x
  2. Step 2: Convert to fraction form
    154,012.03/212,522.75 = 86,019.57/x
  3. Step 3: Cross multiply
    154,012.03x = 212,522.75 × 86,019.57
  4. Step 4: Simplify right side
    154,012.03x = 18,281,115,583.66
  5. Step 5: Solve for x
    x = 18,281,115,583.66/154,012.03
  6. Step 6: Final answer
    x = 118,699.27

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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.