Home / 130,272.72-179,763.65-72,908.63

Finding the Fourth Proportional to 130,272.72, 179,763.65 and 72,908.63

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Solution

The fourth proportional to 130,272.72, 179,763.65 and 72,908.63 is: 100,606.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,272.72 : 179,763.65 = 72,908.63 : x
  2. Step 2: Convert to fraction form
    130,272.72/179,763.65 = 72,908.63/x
  3. Step 3: Cross multiply
    130,272.72x = 179,763.65 × 72,908.63
  4. Step 4: Simplify right side
    130,272.72x = 13,106,320,546.48
  5. Step 5: Solve for x
    x = 13,106,320,546.48/130,272.72
  6. Step 6: Final answer
    x = 100,606.79

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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.