Home / 212,075.40-317,879.82-87,348.36

Finding the Fourth Proportional to 212,075.40, 317,879.82 and 87,348.36

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Solution

The fourth proportional to 212,075.40, 317,879.82 and 87,348.36 is: 130,926.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,075.40 : 317,879.82 = 87,348.36 : x
  2. Step 2: Convert to fraction form
    212,075.40/317,879.82 = 87,348.36/x
  3. Step 3: Cross multiply
    212,075.40x = 317,879.82 × 87,348.36
  4. Step 4: Simplify right side
    212,075.40x = 27,766,280,954.10
  5. Step 5: Solve for x
    x = 27,766,280,954.10/212,075.40
  6. Step 6: Final answer
    x = 130,926.46

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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.