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Finding the Fourth Proportional to 91,700.10, 136,922.76 and 82,150.92

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Solution

The fourth proportional to 91,700.10, 136,922.76 and 82,150.92 is: 122,664.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,700.10 : 136,922.76 = 82,150.92 : x
  2. Step 2: Convert to fraction form
    91,700.10/136,922.76 = 82,150.92/x
  3. Step 3: Cross multiply
    91,700.10x = 136,922.76 × 82,150.92
  4. Step 4: Simplify right side
    91,700.10x = 11,248,330,702.94
  5. Step 5: Solve for x
    x = 11,248,330,702.94/91,700.10
  6. Step 6: Final answer
    x = 122,664.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.