Home / 154,109.56-212,677.75-86,126.53

Finding the Fourth Proportional to 154,109.56, 212,677.75 and 86,126.53

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Solution

The fourth proportional to 154,109.56, 212,677.75 and 86,126.53 is: 118,858.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,109.56 : 212,677.75 = 86,126.53 : x
  2. Step 2: Convert to fraction form
    154,109.56/212,677.75 = 86,126.53/x
  3. Step 3: Cross multiply
    154,109.56x = 212,677.75 × 86,126.53
  4. Step 4: Simplify right side
    154,109.56x = 18,317,195,552.32
  5. Step 5: Solve for x
    x = 18,317,195,552.32/154,109.56
  6. Step 6: Final answer
    x = 118,858.27

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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.