Home / 136,983.71-188,915.12-86,001.20

Finding the Fourth Proportional to 136,983.71, 188,915.12 and 86,001.20

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Solution

The fourth proportional to 136,983.71, 188,915.12 and 86,001.20 is: 118,604.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,983.71 : 188,915.12 = 86,001.20 : x
  2. Step 2: Convert to fraction form
    136,983.71/188,915.12 = 86,001.20/x
  3. Step 3: Cross multiply
    136,983.71x = 188,915.12 × 86,001.20
  4. Step 4: Simplify right side
    136,983.71x = 16,246,927,158.26
  5. Step 5: Solve for x
    x = 16,246,927,158.26/136,983.71
  6. Step 6: Final answer
    x = 118,604.81

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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.