Home / 103,705.80-155,400.18-69,846.60

Finding the Fourth Proportional to 103,705.80, 155,400.18 and 69,846.60

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Solution

The fourth proportional to 103,705.80, 155,400.18 and 69,846.60 is: 104,663.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,705.80 : 155,400.18 = 69,846.60 : x
  2. Step 2: Convert to fraction form
    103,705.80/155,400.18 = 69,846.60/x
  3. Step 3: Cross multiply
    103,705.80x = 155,400.18 × 69,846.60
  4. Step 4: Simplify right side
    103,705.80x = 10,854,174,212.39
  5. Step 5: Solve for x
    x = 10,854,174,212.39/103,705.80
  6. Step 6: Final answer
    x = 104,663.14

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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.