Home / 159,075.81-219,524.76-87,457.05

Finding the Fourth Proportional to 159,075.81, 219,524.76 and 87,457.05

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Solution

The fourth proportional to 159,075.81, 219,524.76 and 87,457.05 is: 120,690.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,075.81 : 219,524.76 = 87,457.05 : x
  2. Step 2: Convert to fraction form
    159,075.81/219,524.76 = 87,457.05/x
  3. Step 3: Cross multiply
    159,075.81x = 219,524.76 × 87,457.05
  4. Step 4: Simplify right side
    159,075.81x = 19,198,987,911.56
  5. Step 5: Solve for x
    x = 19,198,987,911.56/159,075.81
  6. Step 6: Final answer
    x = 120,690.81

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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.