Home / 154,679.25-213,457.38-87,611.25

Finding the Fourth Proportional to 154,679.25, 213,457.38 and 87,611.25

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Solution

The fourth proportional to 154,679.25, 213,457.38 and 87,611.25 is: 120,903.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,679.25 : 213,457.38 = 87,611.25 : x
  2. Step 2: Convert to fraction form
    154,679.25/213,457.38 = 87,611.25/x
  3. Step 3: Cross multiply
    154,679.25x = 213,457.38 × 87,611.25
  4. Step 4: Simplify right side
    154,679.25x = 18,701,267,883.53
  5. Step 5: Solve for x
    x = 18,701,267,883.53/154,679.25
  6. Step 6: Final answer
    x = 120,903.53

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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.