Home / 145,428.10-217,873.35-82,912.90

Finding the Fourth Proportional to 145,428.10, 217,873.35 and 82,912.90

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Solution

The fourth proportional to 145,428.10, 217,873.35 and 82,912.90 is: 124,216.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,428.10 : 217,873.35 = 82,912.90 : x
  2. Step 2: Convert to fraction form
    145,428.10/217,873.35 = 82,912.90/x
  3. Step 3: Cross multiply
    145,428.10x = 217,873.35 × 82,912.90
  4. Step 4: Simplify right side
    145,428.10x = 18,064,511,281.22
  5. Step 5: Solve for x
    x = 18,064,511,281.22/145,428.10
  6. Step 6: Final answer
    x = 124,216.10

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1.5x scale

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.