Home / 209,931.13-314,946.31-83,578.62

Finding the Fourth Proportional to 209,931.13, 314,946.31 and 83,578.62

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Solution

The fourth proportional to 209,931.13, 314,946.31 and 83,578.62 is: 125,387.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,931.13 : 314,946.31 = 83,578.62 : x
  2. Step 2: Convert to fraction form
    209,931.13/314,946.31 = 83,578.62/x
  3. Step 3: Cross multiply
    209,931.13x = 314,946.31 × 83,578.62
  4. Step 4: Simplify right side
    209,931.13x = 26,322,777,963.89
  5. Step 5: Solve for x
    x = 26,322,777,963.89/209,931.13
  6. Step 6: Final answer
    x = 125,387.68

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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.