Home / 208,688.40-287,990.36-113,195.48

Finding the Fourth Proportional to 208,688.40, 287,990.36 and 113,195.48

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Solution

The fourth proportional to 208,688.40, 287,990.36 and 113,195.48 is: 156,209.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,688.40 : 287,990.36 = 113,195.48 : x
  2. Step 2: Convert to fraction form
    208,688.40/287,990.36 = 113,195.48/x
  3. Step 3: Cross multiply
    208,688.40x = 287,990.36 × 113,195.48
  4. Step 4: Simplify right side
    208,688.40x = 32,599,207,035.57
  5. Step 5: Solve for x
    x = 32,599,207,035.57/208,688.40
  6. Step 6: Final answer
    x = 156,209.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.