Home / 142,075.96-211,949.41-138,214.69

Finding the Fourth Proportional to 142,075.96, 211,949.41 and 138,214.69

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Solution

The fourth proportional to 142,075.96, 211,949.41 and 138,214.69 is: 206,189.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,075.96 : 211,949.41 = 138,214.69 : x
  2. Step 2: Convert to fraction form
    142,075.96/211,949.41 = 138,214.69/x
  3. Step 3: Cross multiply
    142,075.96x = 211,949.41 × 138,214.69
  4. Step 4: Simplify right side
    142,075.96x = 29,294,521,998.83
  5. Step 5: Solve for x
    x = 29,294,521,998.83/142,075.96
  6. Step 6: Final answer
    x = 206,189.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.