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Finding the Fourth Proportional to 130,008, 179,418.72 and 73,425.60

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Solution

The fourth proportional to 130,008, 179,418.72 and 73,425.60 is: 101,331.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,008 : 179,418.72 = 73,425.60 : x
  2. Step 2: Convert to fraction form
    130,008/179,418.72 = 73,425.60/x
  3. Step 3: Cross multiply
    130,008x = 179,418.72 × 73,425.60
  4. Step 4: Simplify right side
    130,008x = 13,173,927,167.23
  5. Step 5: Solve for x
    x = 13,173,927,167.23/130,008
  6. Step 6: Final answer
    x = 101,331.67

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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.