Home / 103,424.51-155,145.69-28,544.66

Finding the Fourth Proportional to 103,424.51, 155,145.69 and 28,544.66

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Solution

The fourth proportional to 103,424.51, 155,145.69 and 28,544.66 is: 42,819.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,424.51 : 155,145.69 = 28,544.66 : x
  2. Step 2: Convert to fraction form
    103,424.51/155,145.69 = 28,544.66/x
  3. Step 3: Cross multiply
    103,424.51x = 155,145.69 × 28,544.66
  4. Step 4: Simplify right side
    103,424.51x = 4,428,580,195.79
  5. Step 5: Solve for x
    x = 4,428,580,195.79/103,424.51
  6. Step 6: Final answer
    x = 42,819.45

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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.