Home / 209,513.12-314,318.88-69,271.76

Finding the Fourth Proportional to 209,513.12, 314,318.88 and 69,271.76

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Solution

The fourth proportional to 209,513.12, 314,318.88 and 69,271.76 is: 103,923.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,513.12 : 314,318.88 = 69,271.76 : x
  2. Step 2: Convert to fraction form
    209,513.12/314,318.88 = 69,271.76/x
  3. Step 3: Cross multiply
    209,513.12x = 314,318.88 × 69,271.76
  4. Step 4: Simplify right side
    209,513.12x = 21,773,422,018.83
  5. Step 5: Solve for x
    x = 21,773,422,018.83/209,513.12
  6. Step 6: Final answer
    x = 103,923.91

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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.