Home / 119,681.64-178,790.13-86,115.24

Finding the Fourth Proportional to 119,681.64, 178,790.13 and 86,115.24

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Solution

The fourth proportional to 119,681.64, 178,790.13 and 86,115.24 is: 128,645.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,681.64 : 178,790.13 = 86,115.24 : x
  2. Step 2: Convert to fraction form
    119,681.64/178,790.13 = 86,115.24/x
  3. Step 3: Cross multiply
    119,681.64x = 178,790.13 × 86,115.24
  4. Step 4: Simplify right side
    119,681.64x = 15,396,554,954.58
  5. Step 5: Solve for x
    x = 15,396,554,954.58/119,681.64
  6. Step 6: Final answer
    x = 128,645.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.