Home / 129,821.12-179,153.04-70,205.12

Finding the Fourth Proportional to 129,821.12, 179,153.04 and 70,205.12

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Solution

The fourth proportional to 129,821.12, 179,153.04 and 70,205.12 is: 96,883.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,821.12 : 179,153.04 = 70,205.12 : x
  2. Step 2: Convert to fraction form
    129,821.12/179,153.04 = 70,205.12/x
  3. Step 3: Cross multiply
    129,821.12x = 179,153.04 × 70,205.12
  4. Step 4: Simplify right side
    129,821.12x = 12,577,460,671.56
  5. Step 5: Solve for x
    x = 12,577,460,671.56/129,821.12
  6. Step 6: Final answer
    x = 96,883.01

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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.