Home / 154,679.28-213,457.32-87,611.28

Finding the Fourth Proportional to 154,679.28, 213,457.32 and 87,611.28

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Solution

The fourth proportional to 154,679.28, 213,457.32 and 87,611.28 is: 120,903.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,679.28 : 213,457.32 = 87,611.28 : x
  2. Step 2: Convert to fraction form
    154,679.28/213,457.32 = 87,611.28/x
  3. Step 3: Cross multiply
    154,679.28x = 213,457.32 × 87,611.28
  4. Step 4: Simplify right side
    154,679.28x = 18,701,269,030.57
  5. Step 5: Solve for x
    x = 18,701,269,030.57/154,679.28
  6. Step 6: Final answer
    x = 120,903.52

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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.