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Finding the Fourth Proportional to 159,223.76, 219,730.64 and 91,239.36

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Solution

The fourth proportional to 159,223.76, 219,730.64 and 91,239.36 is: 125,911.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,223.76 : 219,730.64 = 91,239.36 : x
  2. Step 2: Convert to fraction form
    159,223.76/219,730.64 = 91,239.36/x
  3. Step 3: Cross multiply
    159,223.76x = 219,730.64 × 91,239.36
  4. Step 4: Simplify right side
    159,223.76x = 20,048,082,965.99
  5. Step 5: Solve for x
    x = 20,048,082,965.99/159,223.76
  6. Step 6: Final answer
    x = 125,911.38

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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.