Home / 136,632.83-188,641.05-85,715.36

Finding the Fourth Proportional to 136,632.83, 188,641.05 and 85,715.36

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Solution

The fourth proportional to 136,632.83, 188,641.05 and 85,715.36 is: 118,342.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,632.83 : 188,641.05 = 85,715.36 : x
  2. Step 2: Convert to fraction form
    136,632.83/188,641.05 = 85,715.36/x
  3. Step 3: Cross multiply
    136,632.83x = 188,641.05 × 85,715.36
  4. Step 4: Simplify right side
    136,632.83x = 16,169,436,497.55
  5. Step 5: Solve for x
    x = 16,169,436,497.55/136,632.83
  6. Step 6: Final answer
    x = 118,342.25

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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.