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Finding the Fourth Proportional to 92,705.58, 138,874.12 and 45,182.09

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Solution

The fourth proportional to 92,705.58, 138,874.12 and 45,182.09 is: 67,683.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,705.58 : 138,874.12 = 45,182.09 : x
  2. Step 2: Convert to fraction form
    92,705.58/138,874.12 = 45,182.09/x
  3. Step 3: Cross multiply
    92,705.58x = 138,874.12 × 45,182.09
  4. Step 4: Simplify right side
    92,705.58x = 6,274,622,988.51
  5. Step 5: Solve for x
    x = 6,274,622,988.51/92,705.58
  6. Step 6: Final answer
    x = 67,683.34

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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.