Home / 124,943.05-172,420-68,353.75

Finding the Fourth Proportional to 124,943.05, 172,420 and 68,353.75

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Solution

The fourth proportional to 124,943.05, 172,420 and 68,353.75 is: 94,327.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,943.05 : 172,420 = 68,353.75 : x
  2. Step 2: Convert to fraction form
    124,943.05/172,420 = 68,353.75/x
  3. Step 3: Cross multiply
    124,943.05x = 172,420 × 68,353.75
  4. Step 4: Simplify right side
    124,943.05x = 11,785,553,575
  5. Step 5: Solve for x
    x = 11,785,553,575/124,943.05
  6. Step 6: Final answer
    x = 94,327.40

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1.5x scale

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.