Home / 209,701.12-314,549.76-85,012.48

Finding the Fourth Proportional to 209,701.12, 314,549.76 and 85,012.48

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Solution

The fourth proportional to 209,701.12, 314,549.76 and 85,012.48 is: 127,517.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,701.12 : 314,549.76 = 85,012.48 : x
  2. Step 2: Convert to fraction form
    209,701.12/314,549.76 = 85,012.48/x
  3. Step 3: Cross multiply
    209,701.12x = 314,549.76 × 85,012.48
  4. Step 4: Simplify right side
    209,701.12x = 26,740,655,181.00
  5. Step 5: Solve for x
    x = 26,740,655,181.00/209,701.12
  6. Step 6: Final answer
    x = 127,517.94

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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.