Home / 154,915.60-213,829.32-91,273.90

Finding the Fourth Proportional to 154,915.60, 213,829.32 and 91,273.90

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Solution

The fourth proportional to 154,915.60, 213,829.32 and 91,273.90 is: 125,984.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,915.60 : 213,829.32 = 91,273.90 : x
  2. Step 2: Convert to fraction form
    154,915.60/213,829.32 = 91,273.90/x
  3. Step 3: Cross multiply
    154,915.60x = 213,829.32 × 91,273.90
  4. Step 4: Simplify right side
    154,915.60x = 19,517,035,970.75
  5. Step 5: Solve for x
    x = 19,517,035,970.75/154,915.60
  6. Step 6: Final answer
    x = 125,984.96

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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.