Home / 209,705.12-314,555.76-85,016.48

Finding the Fourth Proportional to 209,705.12, 314,555.76 and 85,016.48

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Solution

The fourth proportional to 209,705.12, 314,555.76 and 85,016.48 is: 127,523.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,705.12 : 314,555.76 = 85,016.48 : x
  2. Step 2: Convert to fraction form
    209,705.12/314,555.76 = 85,016.48/x
  3. Step 3: Cross multiply
    209,705.12x = 314,555.76 × 85,016.48
  4. Step 4: Simplify right side
    209,705.12x = 26,742,423,478.92
  5. Step 5: Solve for x
    x = 26,742,423,478.92/209,705.12
  6. Step 6: Final answer
    x = 127,523.94

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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.