Home / 129,762.18-179,076.96-73,172.34

Finding the Fourth Proportional to 129,762.18, 179,076.96 and 73,172.34

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Solution

The fourth proportional to 129,762.18, 179,076.96 and 73,172.34 is: 100,980.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,762.18 : 179,076.96 = 73,172.34 : x
  2. Step 2: Convert to fraction form
    129,762.18/179,076.96 = 73,172.34/x
  3. Step 3: Cross multiply
    129,762.18x = 179,076.96 × 73,172.34
  4. Step 4: Simplify right side
    129,762.18x = 13,103,480,203.29
  5. Step 5: Solve for x
    x = 13,103,480,203.29/129,762.18
  6. Step 6: Final answer
    x = 100,980.73

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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.