Home / 212,358.93-318,316.28-79,181.25

Finding the Fourth Proportional to 212,358.93, 318,316.28 and 79,181.25

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Solution

The fourth proportional to 212,358.93, 318,316.28 and 79,181.25 is: 118,689.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,358.93 : 318,316.28 = 79,181.25 : x
  2. Step 2: Convert to fraction form
    212,358.93/318,316.28 = 79,181.25/x
  3. Step 3: Cross multiply
    212,358.93x = 318,316.28 × 79,181.25
  4. Step 4: Simplify right side
    212,358.93x = 25,204,680,549.84
  5. Step 5: Solve for x
    x = 25,204,680,549.84/212,358.93
  6. Step 6: Final answer
    x = 118,689.05

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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.