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Finding the Fourth Proportional to 108,641.16, 150,130.44 and 81,736.92

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Solution

The fourth proportional to 108,641.16, 150,130.44 and 81,736.92 is: 112,951.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,641.16 : 150,130.44 = 81,736.92 : x
  2. Step 2: Convert to fraction form
    108,641.16/150,130.44 = 81,736.92/x
  3. Step 3: Cross multiply
    108,641.16x = 150,130.44 × 81,736.92
  4. Step 4: Simplify right side
    108,641.16x = 12,271,199,763.84
  5. Step 5: Solve for x
    x = 12,271,199,763.84/108,641.16
  6. Step 6: Final answer
    x = 112,951.66

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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.