Home / 173,045.79-259,365.15-78,165.21

Finding the Fourth Proportional to 173,045.79, 259,365.15 and 78,165.21

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Solution

The fourth proportional to 173,045.79, 259,365.15 and 78,165.21 is: 117,155.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,045.79 : 259,365.15 = 78,165.21 : x
  2. Step 2: Convert to fraction form
    173,045.79/259,365.15 = 78,165.21/x
  3. Step 3: Cross multiply
    173,045.79x = 259,365.15 × 78,165.21
  4. Step 4: Simplify right side
    173,045.79x = 20,273,331,416.43
  5. Step 5: Solve for x
    x = 20,273,331,416.43/173,045.79
  6. Step 6: Final answer
    x = 117,155.88

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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.