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Finding the Fourth Proportional to 124,797.68, 172,222.08 and 68,210

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Solution

The fourth proportional to 124,797.68, 172,222.08 and 68,210 is: 94,130.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,797.68 : 172,222.08 = 68,210 : x
  2. Step 2: Convert to fraction form
    124,797.68/172,222.08 = 68,210/x
  3. Step 3: Cross multiply
    124,797.68x = 172,222.08 × 68,210
  4. Step 4: Simplify right side
    124,797.68x = 11,747,268,076.80
  5. Step 5: Solve for x
    x = 11,747,268,076.80/124,797.68
  6. Step 6: Final answer
    x = 94,130.50

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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.