Home / 129,703.04-178,990.32-70,087.04

Finding the Fourth Proportional to 129,703.04, 178,990.32 and 70,087.04

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Solution

The fourth proportional to 129,703.04, 178,990.32 and 70,087.04 is: 96,720.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,703.04 : 178,990.32 = 70,087.04 : x
  2. Step 2: Convert to fraction form
    129,703.04/178,990.32 = 70,087.04/x
  3. Step 3: Cross multiply
    129,703.04x = 178,990.32 × 70,087.04
  4. Step 4: Simplify right side
    129,703.04x = 12,544,901,717.45
  5. Step 5: Solve for x
    x = 12,544,901,717.45/129,703.04
  6. Step 6: Final answer
    x = 96,720.18

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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.