Home / 129,947.09-179,327.60-72,588.82

Finding the Fourth Proportional to 129,947.09, 179,327.60 and 72,588.82

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Solution

The fourth proportional to 129,947.09, 179,327.60 and 72,588.82 is: 100,172.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,947.09 : 179,327.60 = 72,588.82 : x
  2. Step 2: Convert to fraction form
    129,947.09/179,327.60 = 72,588.82/x
  3. Step 3: Cross multiply
    129,947.09x = 179,327.60 × 72,588.82
  4. Step 4: Simplify right side
    129,947.09x = 13,017,179,533.23
  5. Step 5: Solve for x
    x = 13,017,179,533.23/129,947.09
  6. Step 6: Final answer
    x = 100,172.92

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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.