Home / 157,106.24-216,834.72-100,515.68

Finding the Fourth Proportional to 157,106.24, 216,834.72 and 100,515.68

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Solution

The fourth proportional to 157,106.24, 216,834.72 and 100,515.68 is: 138,729.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,106.24 : 216,834.72 = 100,515.68 : x
  2. Step 2: Convert to fraction form
    157,106.24/216,834.72 = 100,515.68/x
  3. Step 3: Cross multiply
    157,106.24x = 216,834.72 × 100,515.68
  4. Step 4: Simplify right side
    157,106.24x = 21,795,289,328.41
  5. Step 5: Solve for x
    x = 21,795,289,328.41/157,106.24
  6. Step 6: Final answer
    x = 138,729.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.