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Finding the Fourth Proportional to 92,754.63, 128,066.22 and 81,916.56

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Solution

The fourth proportional to 92,754.63, 128,066.22 and 81,916.56 is: 113,102.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,754.63 : 128,066.22 = 81,916.56 : x
  2. Step 2: Convert to fraction form
    92,754.63/128,066.22 = 81,916.56/x
  3. Step 3: Cross multiply
    92,754.63x = 128,066.22 × 81,916.56
  4. Step 4: Simplify right side
    92,754.63x = 10,490,744,194.60
  5. Step 5: Solve for x
    x = 10,490,744,194.60/92,754.63
  6. Step 6: Final answer
    x = 113,102.11

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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.