Home / 209,419.08-314,127.18-84,758.28

Finding the Fourth Proportional to 209,419.08, 314,127.18 and 84,758.28

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Solution

The fourth proportional to 209,419.08, 314,127.18 and 84,758.28 is: 127,136.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,419.08 : 314,127.18 = 84,758.28 : x
  2. Step 2: Convert to fraction form
    209,419.08/314,127.18 = 84,758.28/x
  3. Step 3: Cross multiply
    209,419.08x = 314,127.18 × 84,758.28
  4. Step 4: Simplify right side
    209,419.08x = 26,624,879,478.05
  5. Step 5: Solve for x
    x = 26,624,879,478.05/209,419.08
  6. Step 6: Final answer
    x = 127,136.84

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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.