Home / 135,122.16-186,423.12-87,435.84

Finding the Fourth Proportional to 135,122.16, 186,423.12 and 87,435.84

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Solution

The fourth proportional to 135,122.16, 186,423.12 and 87,435.84 is: 120,632.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,122.16 : 186,423.12 = 87,435.84 : x
  2. Step 2: Convert to fraction form
    135,122.16/186,423.12 = 87,435.84/x
  3. Step 3: Cross multiply
    135,122.16x = 186,423.12 × 87,435.84
  4. Step 4: Simplify right side
    135,122.16x = 16,300,062,092.62
  5. Step 5: Solve for x
    x = 16,300,062,092.62/135,122.16
  6. Step 6: Final answer
    x = 120,632.04

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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.