Home / 129,713.04-179,012.25-73,128.06

Finding the Fourth Proportional to 129,713.04, 179,012.25 and 73,128.06

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Solution

The fourth proportional to 129,713.04, 179,012.25 and 73,128.06 is: 100,921.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,713.04 : 179,012.25 = 73,128.06 : x
  2. Step 2: Convert to fraction form
    129,713.04/179,012.25 = 73,128.06/x
  3. Step 3: Cross multiply
    129,713.04x = 179,012.25 × 73,128.06
  4. Step 4: Simplify right side
    129,713.04x = 13,090,818,558.74
  5. Step 5: Solve for x
    x = 13,090,818,558.74/129,713.04
  6. Step 6: Final answer
    x = 100,921.38

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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.