Home / 208,578.03-312,681.47-75,428.70

Finding the Fourth Proportional to 208,578.03, 312,681.47 and 75,428.70

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Solution

The fourth proportional to 208,578.03, 312,681.47 and 75,428.70 is: 113,075.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,578.03 : 312,681.47 = 75,428.70 : x
  2. Step 2: Convert to fraction form
    208,578.03/312,681.47 = 75,428.70/x
  3. Step 3: Cross multiply
    208,578.03x = 312,681.47 × 75,428.70
  4. Step 4: Simplify right side
    208,578.03x = 23,585,155,232.78
  5. Step 5: Solve for x
    x = 23,585,155,232.78/208,578.03
  6. Step 6: Final answer
    x = 113,075.93

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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.