Home / 129,855.81-179,211.96-73,278.12

Finding the Fourth Proportional to 129,855.81, 179,211.96 and 73,278.12

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Solution

The fourth proportional to 129,855.81, 179,211.96 and 73,278.12 is: 101,129.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,855.81 : 179,211.96 = 73,278.12 : x
  2. Step 2: Convert to fraction form
    129,855.81/179,211.96 = 73,278.12/x
  3. Step 3: Cross multiply
    129,855.81x = 179,211.96 × 73,278.12
  4. Step 4: Simplify right side
    129,855.81x = 13,132,315,510.32
  5. Step 5: Solve for x
    x = 13,132,315,510.32/129,855.81
  6. Step 6: Final answer
    x = 101,129.98

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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.