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Finding the Fourth Proportional to 149,312.70, 206,043.75 and 92,722.86

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Solution

The fourth proportional to 149,312.70, 206,043.75 and 92,722.86 is: 127,952.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,312.70 : 206,043.75 = 92,722.86 : x
  2. Step 2: Convert to fraction form
    149,312.70/206,043.75 = 92,722.86/x
  3. Step 3: Cross multiply
    149,312.70x = 206,043.75 × 92,722.86
  4. Step 4: Simplify right side
    149,312.70x = 19,104,965,785.13
  5. Step 5: Solve for x
    x = 19,104,965,785.13/149,312.70
  6. Step 6: Final answer
    x = 127,952.72

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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.