Home / 123,989.06-171,106.02-67,400.54

Finding the Fourth Proportional to 123,989.06, 171,106.02 and 67,400.54

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Solution

The fourth proportional to 123,989.06, 171,106.02 and 67,400.54 is: 93,013.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,989.06 : 171,106.02 = 67,400.54 : x
  2. Step 2: Convert to fraction form
    123,989.06/171,106.02 = 67,400.54/x
  3. Step 3: Cross multiply
    123,989.06x = 171,106.02 × 67,400.54
  4. Step 4: Simplify right side
    123,989.06x = 11,532,638,145.25
  5. Step 5: Solve for x
    x = 11,532,638,145.25/123,989.06
  6. Step 6: Final answer
    x = 93,013.35

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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.