Home / 209,926.80-314,688.60-69,613.20

Finding the Fourth Proportional to 209,926.80, 314,688.60 and 69,613.20

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Solution

The fourth proportional to 209,926.80, 314,688.60 and 69,613.20 is: 104,352.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,926.80 : 314,688.60 = 69,613.20 : x
  2. Step 2: Convert to fraction form
    209,926.80/314,688.60 = 69,613.20/x
  3. Step 3: Cross multiply
    209,926.80x = 314,688.60 × 69,613.20
  4. Step 4: Simplify right side
    209,926.80x = 21,906,480,449.52
  5. Step 5: Solve for x
    x = 21,906,480,449.52/209,926.80
  6. Step 6: Final answer
    x = 104,352.95

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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.