Home / 212,078.84-318,109.95-71,837.46

Finding the Fourth Proportional to 212,078.84, 318,109.95 and 71,837.46

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Solution

The fourth proportional to 212,078.84, 318,109.95 and 71,837.46 is: 107,753.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,078.84 : 318,109.95 = 71,837.46 : x
  2. Step 2: Convert to fraction form
    212,078.84/318,109.95 = 71,837.46/x
  3. Step 3: Cross multiply
    212,078.84x = 318,109.95 × 71,837.46
  4. Step 4: Simplify right side
    212,078.84x = 22,852,210,808.73
  5. Step 5: Solve for x
    x = 22,852,210,808.73/212,078.84
  6. Step 6: Final answer
    x = 107,753.38

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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.