Home / 102,859.26-154,303.65-31,788.12

Finding the Fourth Proportional to 102,859.26, 154,303.65 and 31,788.12

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Solution

The fourth proportional to 102,859.26, 154,303.65 and 31,788.12 is: 47,686.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,859.26 : 154,303.65 = 31,788.12 : x
  2. Step 2: Convert to fraction form
    102,859.26/154,303.65 = 31,788.12/x
  3. Step 3: Cross multiply
    102,859.26x = 154,303.65 × 31,788.12
  4. Step 4: Simplify right side
    102,859.26x = 4,905,022,942.64
  5. Step 5: Solve for x
    x = 4,905,022,942.64/102,859.26
  6. Step 6: Final answer
    x = 47,686.74

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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.