Home / 209,485.12-314,276.88-69,243.74

Finding the Fourth Proportional to 209,485.12, 314,276.88 and 69,243.74

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Solution

The fourth proportional to 209,485.12, 314,276.88 and 69,243.74 is: 103,881.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,485.12 : 314,276.88 = 69,243.74 : x
  2. Step 2: Convert to fraction form
    209,485.12/314,276.88 = 69,243.74/x
  3. Step 3: Cross multiply
    209,485.12x = 314,276.88 × 69,243.74
  4. Step 4: Simplify right side
    209,485.12x = 21,761,706,566.73
  5. Step 5: Solve for x
    x = 21,761,706,566.73/209,485.12
  6. Step 6: Final answer
    x = 103,881.87

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1.5x scale

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.