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Finding the Fourth Proportional to 180,859.32, 271,013.58 and 91,979.64

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Solution

The fourth proportional to 180,859.32, 271,013.58 and 91,979.64 is: 137,829.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,859.32 : 271,013.58 = 91,979.64 : x
  2. Step 2: Convert to fraction form
    180,859.32/271,013.58 = 91,979.64/x
  3. Step 3: Cross multiply
    180,859.32x = 271,013.58 × 91,979.64
  4. Step 4: Simplify right side
    180,859.32x = 24,927,731,523.51
  5. Step 5: Solve for x
    x = 24,927,731,523.51/180,859.32
  6. Step 6: Final answer
    x = 137,829.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.