Home / 103,635.06-155,455.22-77,505.67

Finding the Fourth Proportional to 103,635.06, 155,455.22 and 77,505.67

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Solution

The fourth proportional to 103,635.06, 155,455.22 and 77,505.67 is: 116,260.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,635.06 : 155,455.22 = 77,505.67 : x
  2. Step 2: Convert to fraction form
    103,635.06/155,455.22 = 77,505.67/x
  3. Step 3: Cross multiply
    103,635.06x = 155,455.22 × 77,505.67
  4. Step 4: Simplify right side
    103,635.06x = 12,048,660,981.10
  5. Step 5: Solve for x
    x = 12,048,660,981.10/103,635.06
  6. Step 6: Final answer
    x = 116,260.47

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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.