Home / 129,855.84-179,200.35-72,491.85

Finding the Fourth Proportional to 129,855.84, 179,200.35 and 72,491.85

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Solution

The fourth proportional to 129,855.84, 179,200.35 and 72,491.85 is: 100,038.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,855.84 : 179,200.35 = 72,491.85 : x
  2. Step 2: Convert to fraction form
    129,855.84/179,200.35 = 72,491.85/x
  3. Step 3: Cross multiply
    129,855.84x = 179,200.35 × 72,491.85
  4. Step 4: Simplify right side
    129,855.84x = 12,990,563,996.15
  5. Step 5: Solve for x
    x = 12,990,563,996.15/129,855.84
  6. Step 6: Final answer
    x = 100,038.35

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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.