Home / 209,962.10-314,986.35-69,821.30

Finding the Fourth Proportional to 209,962.10, 314,986.35 and 69,821.30

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Solution

The fourth proportional to 209,962.10, 314,986.35 and 69,821.30 is: 104,746.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,962.10 : 314,986.35 = 69,821.30 : x
  2. Step 2: Convert to fraction form
    209,962.10/314,986.35 = 69,821.30/x
  3. Step 3: Cross multiply
    209,962.10x = 314,986.35 × 69,821.30
  4. Step 4: Simplify right side
    209,962.10x = 21,992,756,439.26
  5. Step 5: Solve for x
    x = 21,992,756,439.26/209,962.10
  6. Step 6: Final answer
    x = 104,746.32

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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.