Home / 113,054.48-155,926.16-100,147.56

Finding the Fourth Proportional to 113,054.48, 155,926.16 and 100,147.56

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Solution

The fourth proportional to 113,054.48, 155,926.16 and 100,147.56 is: 138,124.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,054.48 : 155,926.16 = 100,147.56 : x
  2. Step 2: Convert to fraction form
    113,054.48/155,926.16 = 100,147.56/x
  3. Step 3: Cross multiply
    113,054.48x = 155,926.16 × 100,147.56
  4. Step 4: Simplify right side
    113,054.48x = 15,615,624,464.17
  5. Step 5: Solve for x
    x = 15,615,624,464.17/113,054.48
  6. Step 6: Final answer
    x = 138,124.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.