Home / 209,422.48-314,089.56-69,149.20

Finding the Fourth Proportional to 209,422.48, 314,089.56 and 69,149.20

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Solution

The fourth proportional to 209,422.48, 314,089.56 and 69,149.20 is: 103,709.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,422.48 : 314,089.56 = 69,149.20 : x
  2. Step 2: Convert to fraction form
    209,422.48/314,089.56 = 69,149.20/x
  3. Step 3: Cross multiply
    209,422.48x = 314,089.56 × 69,149.20
  4. Step 4: Simplify right side
    209,422.48x = 21,719,041,802.35
  5. Step 5: Solve for x
    x = 21,719,041,802.35/209,422.48
  6. Step 6: Final answer
    x = 103,709.22

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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.