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Finding the Fourth Proportional to 100,603.58, 138,824.79 and 58,164.84

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Solution

The fourth proportional to 100,603.58, 138,824.79 and 58,164.84 is: 80,262.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,603.58 : 138,824.79 = 58,164.84 : x
  2. Step 2: Convert to fraction form
    100,603.58/138,824.79 = 58,164.84/x
  3. Step 3: Cross multiply
    100,603.58x = 138,824.79 × 58,164.84
  4. Step 4: Simplify right side
    100,603.58x = 8,074,721,698.38
  5. Step 5: Solve for x
    x = 8,074,721,698.38/100,603.58
  6. Step 6: Final answer
    x = 80,262.77

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1.5x scale

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.