Home / 103,161.65-154,711.63-31,111.54

Finding the Fourth Proportional to 103,161.65, 154,711.63 and 31,111.54

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Solution

The fourth proportional to 103,161.65, 154,711.63 and 31,111.54 is: 46,658.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,161.65 : 154,711.63 = 31,111.54 : x
  2. Step 2: Convert to fraction form
    103,161.65/154,711.63 = 31,111.54/x
  3. Step 3: Cross multiply
    103,161.65x = 154,711.63 × 31,111.54
  4. Step 4: Simplify right side
    103,161.65x = 4,813,316,600.65
  5. Step 5: Solve for x
    x = 4,813,316,600.65/103,161.65
  6. Step 6: Final answer
    x = 46,658.01

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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.