Home / 129,979.40-194,969.10-91,925.60

Finding the Fourth Proportional to 129,979.40, 194,969.10 and 91,925.60

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Solution

The fourth proportional to 129,979.40, 194,969.10 and 91,925.60 is: 137,888.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,979.40 : 194,969.10 = 91,925.60 : x
  2. Step 2: Convert to fraction form
    129,979.40/194,969.10 = 91,925.60/x
  3. Step 3: Cross multiply
    129,979.40x = 194,969.10 × 91,925.60
  4. Step 4: Simplify right side
    129,979.40x = 17,922,651,498.96
  5. Step 5: Solve for x
    x = 17,922,651,498.96/129,979.40
  6. Step 6: Final answer
    x = 137,888.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.