Home / 103,317.86-154,976.78-40,988.36

Finding the Fourth Proportional to 103,317.86, 154,976.78 and 40,988.36

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Solution

The fourth proportional to 103,317.86, 154,976.78 and 40,988.36 is: 61,482.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,317.86 : 154,976.78 = 40,988.36 : x
  2. Step 2: Convert to fraction form
    103,317.86/154,976.78 = 40,988.36/x
  3. Step 3: Cross multiply
    103,317.86x = 154,976.78 × 40,988.36
  4. Step 4: Simplify right side
    103,317.86x = 6,352,243,377.87
  5. Step 5: Solve for x
    x = 6,352,243,377.87/103,317.86
  6. Step 6: Final answer
    x = 61,482.53

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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.