Home / 154,172.35-212,759.43-86,193.10

Finding the Fourth Proportional to 154,172.35, 212,759.43 and 86,193.10

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Solution

The fourth proportional to 154,172.35, 212,759.43 and 86,193.10 is: 118,947.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,172.35 : 212,759.43 = 86,193.10 : x
  2. Step 2: Convert to fraction form
    154,172.35/212,759.43 = 86,193.10/x
  3. Step 3: Cross multiply
    154,172.35x = 212,759.43 × 86,193.10
  4. Step 4: Simplify right side
    154,172.35x = 18,338,393,331.17
  5. Step 5: Solve for x
    x = 18,338,393,331.17/154,172.35
  6. Step 6: Final answer
    x = 118,947.36

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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.