Home / 129,681.36-178,957.80-73,091.60

Finding the Fourth Proportional to 129,681.36, 178,957.80 and 73,091.60

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Solution

The fourth proportional to 129,681.36, 178,957.80 and 73,091.60 is: 100,865.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,681.36 : 178,957.80 = 73,091.60 : x
  2. Step 2: Convert to fraction form
    129,681.36/178,957.80 = 73,091.60/x
  3. Step 3: Cross multiply
    129,681.36x = 178,957.80 × 73,091.60
  4. Step 4: Simplify right side
    129,681.36x = 13,080,311,934.48
  5. Step 5: Solve for x
    x = 13,080,311,934.48/129,681.36
  6. Step 6: Final answer
    x = 100,865.01

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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.