Home / 209,962.60-314,987.10-69,821.80

Finding the Fourth Proportional to 209,962.60, 314,987.10 and 69,821.80

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Solution

The fourth proportional to 209,962.60, 314,987.10 and 69,821.80 is: 104,747.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,962.60 : 314,987.10 = 69,821.80 : x
  2. Step 2: Convert to fraction form
    209,962.60/314,987.10 = 69,821.80/x
  3. Step 3: Cross multiply
    209,962.60x = 314,987.10 × 69,821.80
  4. Step 4: Simplify right side
    209,962.60x = 21,992,966,298.78
  5. Step 5: Solve for x
    x = 21,992,966,298.78/209,962.60
  6. Step 6: Final answer
    x = 104,747.07

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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.