Home / 123,683.31-170,673.21-72,697.95

Finding the Fourth Proportional to 123,683.31, 170,673.21 and 72,697.95

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Solution

The fourth proportional to 123,683.31, 170,673.21 and 72,697.95 is: 100,317.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,683.31 : 170,673.21 = 72,697.95 : x
  2. Step 2: Convert to fraction form
    123,683.31/170,673.21 = 72,697.95/x
  3. Step 3: Cross multiply
    123,683.31x = 170,673.21 × 72,697.95
  4. Step 4: Simplify right side
    123,683.31x = 12,407,592,486.92
  5. Step 5: Solve for x
    x = 12,407,592,486.92/123,683.31
  6. Step 6: Final answer
    x = 100,317.44

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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.