Home / 131,289.16-196,885.10-103,263.70

Finding the Fourth Proportional to 131,289.16, 196,885.10 and 103,263.70

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Solution

The fourth proportional to 131,289.16, 196,885.10 and 103,263.70 is: 154,857.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,289.16 : 196,885.10 = 103,263.70 : x
  2. Step 2: Convert to fraction form
    131,289.16/196,885.10 = 103,263.70/x
  3. Step 3: Cross multiply
    131,289.16x = 196,885.10 × 103,263.70
  4. Step 4: Simplify right side
    131,289.16x = 20,331,083,900.87
  5. Step 5: Solve for x
    x = 20,331,083,900.87/131,289.16
  6. Step 6: Final answer
    x = 154,857.29

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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.