Home / 154,457.31-231,719.93-87,928.59

Finding the Fourth Proportional to 154,457.31, 231,719.93 and 87,928.59

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Solution

The fourth proportional to 154,457.31, 231,719.93 and 87,928.59 is: 131,912.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,457.31 : 231,719.93 = 87,928.59 : x
  2. Step 2: Convert to fraction form
    154,457.31/231,719.93 = 87,928.59/x
  3. Step 3: Cross multiply
    154,457.31x = 231,719.93 × 87,928.59
  4. Step 4: Simplify right side
    154,457.31x = 20,374,806,280.16
  5. Step 5: Solve for x
    x = 20,374,806,280.16/154,457.31
  6. Step 6: Final answer
    x = 131,912.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.