Home / 209,783.12-314,949.10-124,549.60

Finding the Fourth Proportional to 209,783.12, 314,949.10 and 124,549.60

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Solution

The fourth proportional to 209,783.12, 314,949.10 and 124,549.60 is: 186,987.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,783.12 : 314,949.10 = 124,549.60 : x
  2. Step 2: Convert to fraction form
    209,783.12/314,949.10 = 124,549.60/x
  3. Step 3: Cross multiply
    209,783.12x = 314,949.10 × 124,549.60
  4. Step 4: Simplify right side
    209,783.12x = 39,226,784,425.36
  5. Step 5: Solve for x
    x = 39,226,784,425.36/209,783.12
  6. Step 6: Final answer
    x = 186,987.32

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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.