Home / 102,879.70-154,303.63-39,690.61

Finding the Fourth Proportional to 102,879.70, 154,303.63 and 39,690.61

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Solution

The fourth proportional to 102,879.70, 154,303.63 and 39,690.61 is: 59,529.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,879.70 : 154,303.63 = 39,690.61 : x
  2. Step 2: Convert to fraction form
    102,879.70/154,303.63 = 39,690.61/x
  3. Step 3: Cross multiply
    102,879.70x = 154,303.63 × 39,690.61
  4. Step 4: Simplify right side
    102,879.70x = 6,124,404,938.19
  5. Step 5: Solve for x
    x = 6,124,404,938.19/102,879.70
  6. Step 6: Final answer
    x = 59,529.77

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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.