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Finding the Fourth Proportional to 173,139.70, 259,709.55 and 154,477.30

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Solution

The fourth proportional to 173,139.70, 259,709.55 and 154,477.30 is: 231,715.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,139.70 : 259,709.55 = 154,477.30 : x
  2. Step 2: Convert to fraction form
    173,139.70/259,709.55 = 154,477.30/x
  3. Step 3: Cross multiply
    173,139.70x = 259,709.55 × 154,477.30
  4. Step 4: Simplify right side
    173,139.70x = 40,119,230,068.22
  5. Step 5: Solve for x
    x = 40,119,230,068.22/173,139.70
  6. Step 6: Final answer
    x = 231,715.95

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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.