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Finding the Fourth Proportional to 112,076.10, 168,114.15 and 85,832.10

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Solution

The fourth proportional to 112,076.10, 168,114.15 and 85,832.10 is: 128,748.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,076.10 : 168,114.15 = 85,832.10 : x
  2. Step 2: Convert to fraction form
    112,076.10/168,114.15 = 85,832.10/x
  3. Step 3: Cross multiply
    112,076.10x = 168,114.15 × 85,832.10
  4. Step 4: Simplify right side
    112,076.10x = 14,429,590,534.22
  5. Step 5: Solve for x
    x = 14,429,590,534.22/112,076.10
  6. Step 6: Final answer
    x = 128,748.15

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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.