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Finding the Fourth Proportional to 135,482.68, 186,844.26 and 87,686.20

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Solution

The fourth proportional to 135,482.68, 186,844.26 and 87,686.20 is: 120,928.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,482.68 : 186,844.26 = 87,686.20 : x
  2. Step 2: Convert to fraction form
    135,482.68/186,844.26 = 87,686.20/x
  3. Step 3: Cross multiply
    135,482.68x = 186,844.26 × 87,686.20
  4. Step 4: Simplify right side
    135,482.68x = 16,383,663,151.21
  5. Step 5: Solve for x
    x = 16,383,663,151.21/135,482.68
  6. Step 6: Final answer
    x = 120,928.10

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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.