Home / 103,631.90-155,448.09-28,756.06

Finding the Fourth Proportional to 103,631.90, 155,448.09 and 28,756.06

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Solution

The fourth proportional to 103,631.90, 155,448.09 and 28,756.06 is: 43,134.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,631.90 : 155,448.09 = 28,756.06 : x
  2. Step 2: Convert to fraction form
    103,631.90/155,448.09 = 28,756.06/x
  3. Step 3: Cross multiply
    103,631.90x = 155,448.09 × 28,756.06
  4. Step 4: Simplify right side
    103,631.90x = 4,470,074,214.31
  5. Step 5: Solve for x
    x = 4,470,074,214.31/103,631.90
  6. Step 6: Final answer
    x = 43,134.15

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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.