Home / 208,110.70-312,166.05-74,995.30

Finding the Fourth Proportional to 208,110.70, 312,166.05 and 74,995.30

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Solution

The fourth proportional to 208,110.70, 312,166.05 and 74,995.30 is: 112,492.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,110.70 : 312,166.05 = 74,995.30 : x
  2. Step 2: Convert to fraction form
    208,110.70/312,166.05 = 74,995.30/x
  3. Step 3: Cross multiply
    208,110.70x = 312,166.05 × 74,995.30
  4. Step 4: Simplify right side
    208,110.70x = 23,410,986,569.57
  5. Step 5: Solve for x
    x = 23,410,986,569.57/208,110.70
  6. Step 6: Final answer
    x = 112,492.95

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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.