Home / 102,931.69-154,412.29-31,860.57

Finding the Fourth Proportional to 102,931.69, 154,412.29 and 31,860.57

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Solution

The fourth proportional to 102,931.69, 154,412.29 and 31,860.57 is: 47,795.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,931.69 : 154,412.29 = 31,860.57 : x
  2. Step 2: Convert to fraction form
    102,931.69/154,412.29 = 31,860.57/x
  3. Step 3: Cross multiply
    102,931.69x = 154,412.29 × 31,860.57
  4. Step 4: Simplify right side
    102,931.69x = 4,919,663,574.41
  5. Step 5: Solve for x
    x = 4,919,663,574.41/102,931.69
  6. Step 6: Final answer
    x = 47,795.42

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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.