Home / 213,386.71-320,127.69-80,268.07

Finding the Fourth Proportional to 213,386.71, 320,127.69 and 80,268.07

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Solution

The fourth proportional to 213,386.71, 320,127.69 and 80,268.07 is: 120,420.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,386.71 : 320,127.69 = 80,268.07 : x
  2. Step 2: Convert to fraction form
    213,386.71/320,127.69 = 80,268.07/x
  3. Step 3: Cross multiply
    213,386.71x = 320,127.69 × 80,268.07
  4. Step 4: Simplify right side
    213,386.71x = 25,696,031,829.86
  5. Step 5: Solve for x
    x = 25,696,031,829.86/213,386.71
  6. Step 6: Final answer
    x = 120,420.02

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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.