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Finding the Fourth Proportional to 130,311, 179,829.36 and 73,721.16

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Solution

The fourth proportional to 130,311, 179,829.36 and 73,721.16 is: 101,735.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,311 : 179,829.36 = 73,721.16 : x
  2. Step 2: Convert to fraction form
    130,311/179,829.36 = 73,721.16/x
  3. Step 3: Cross multiply
    130,311x = 179,829.36 × 73,721.16
  4. Step 4: Simplify right side
    130,311x = 13,257,229,021.26
  5. Step 5: Solve for x
    x = 13,257,229,021.26/130,311
  6. Step 6: Final answer
    x = 101,735.30

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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.