Home / 131,285.16-196,879.10-103,259.70

Finding the Fourth Proportional to 131,285.16, 196,879.10 and 103,259.70

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Solution

The fourth proportional to 131,285.16, 196,879.10 and 103,259.70 is: 154,851.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,285.16 : 196,879.10 = 103,259.70 : x
  2. Step 2: Convert to fraction form
    131,285.16/196,879.10 = 103,259.70/x
  3. Step 3: Cross multiply
    131,285.16x = 196,879.10 × 103,259.70
  4. Step 4: Simplify right side
    131,285.16x = 20,329,676,802.27
  5. Step 5: Solve for x
    x = 20,329,676,802.27/131,285.16
  6. Step 6: Final answer
    x = 154,851.29

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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.