Home / 103,636.07-155,456.73-77,506.67

Finding the Fourth Proportional to 103,636.07, 155,456.73 and 77,506.67

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Solution

The fourth proportional to 103,636.07, 155,456.73 and 77,506.67 is: 116,261.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,636.07 : 155,456.73 = 77,506.67 : x
  2. Step 2: Convert to fraction form
    103,636.07/155,456.73 = 77,506.67/x
  3. Step 3: Cross multiply
    103,636.07x = 155,456.73 × 77,506.67
  4. Step 4: Simplify right side
    103,636.07x = 12,048,933,471.39
  5. Step 5: Solve for x
    x = 12,048,933,471.39/103,636.07
  6. Step 6: Final answer
    x = 116,261.97

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1.5x scale

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.