Home / 84,734.10-127,133.55-83,405.70

Finding the Fourth Proportional to 84,734.10, 127,133.55 and 83,405.70

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Solution

The fourth proportional to 84,734.10, 127,133.55 and 83,405.70 is: 125,140.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,734.10 : 127,133.55 = 83,405.70 : x
  2. Step 2: Convert to fraction form
    84,734.10/127,133.55 = 83,405.70/x
  3. Step 3: Cross multiply
    84,734.10x = 127,133.55 × 83,405.70
  4. Step 4: Simplify right side
    84,734.10x = 10,603,662,731.24
  5. Step 5: Solve for x
    x = 10,603,662,731.24/84,734.10
  6. Step 6: Final answer
    x = 125,140.44

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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.