Home / 172,687.12-238,217.01-118,878.72

Finding the Fourth Proportional to 172,687.12, 238,217.01 and 118,878.72

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Solution

The fourth proportional to 172,687.12, 238,217.01 and 118,878.72 is: 163,989.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,687.12 : 238,217.01 = 118,878.72 : x
  2. Step 2: Convert to fraction form
    172,687.12/238,217.01 = 118,878.72/x
  3. Step 3: Cross multiply
    172,687.12x = 238,217.01 × 118,878.72
  4. Step 4: Simplify right side
    172,687.12x = 28,318,933,566.45
  5. Step 5: Solve for x
    x = 28,318,933,566.45/172,687.12
  6. Step 6: Final answer
    x = 163,989.84

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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.