Home / 154,828.72-213,683.36-91,172.44

Finding the Fourth Proportional to 154,828.72, 213,683.36 and 91,172.44

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Solution

The fourth proportional to 154,828.72, 213,683.36 and 91,172.44 is: 125,829.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,828.72 : 213,683.36 = 91,172.44 : x
  2. Step 2: Convert to fraction form
    154,828.72/213,683.36 = 91,172.44/x
  3. Step 3: Cross multiply
    154,828.72x = 213,683.36 × 91,172.44
  4. Step 4: Simplify right side
    154,828.72x = 19,482,033,318.60
  5. Step 5: Solve for x
    x = 19,482,033,318.60/154,828.72
  6. Step 6: Final answer
    x = 125,829.58

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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.