Home / 102,991.07-154,510.18-39,811.72

Finding the Fourth Proportional to 102,991.07, 154,510.18 and 39,811.72

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Solution

The fourth proportional to 102,991.07, 154,510.18 and 39,811.72 is: 59,726.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,991.07 : 154,510.18 = 39,811.72 : x
  2. Step 2: Convert to fraction form
    102,991.07/154,510.18 = 39,811.72/x
  3. Step 3: Cross multiply
    102,991.07x = 154,510.18 × 39,811.72
  4. Step 4: Simplify right side
    102,991.07x = 6,151,315,399.31
  5. Step 5: Solve for x
    x = 6,151,315,399.31/102,991.07
  6. Step 6: Final answer
    x = 59,726.69

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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.