Home / 231,075.28-318,877.99-129,101.50

Finding the Fourth Proportional to 231,075.28, 318,877.99 and 129,101.50

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Solution

The fourth proportional to 231,075.28, 318,877.99 and 129,101.50 is: 178,156.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,075.28 : 318,877.99 = 129,101.50 : x
  2. Step 2: Convert to fraction form
    231,075.28/318,877.99 = 129,101.50/x
  3. Step 3: Cross multiply
    231,075.28x = 318,877.99 × 129,101.50
  4. Step 4: Simplify right side
    231,075.28x = 41,167,626,825.99
  5. Step 5: Solve for x
    x = 41,167,626,825.99/231,075.28
  6. Step 6: Final answer
    x = 178,156.78

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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.