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Finding the Fourth Proportional to 101,749.72, 140,276.46 and 85,806.22

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Solution

The fourth proportional to 101,749.72, 140,276.46 and 85,806.22 is: 118,296.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,749.72 : 140,276.46 = 85,806.22 : x
  2. Step 2: Convert to fraction form
    101,749.72/140,276.46 = 85,806.22/x
  3. Step 3: Cross multiply
    101,749.72x = 140,276.46 × 85,806.22
  4. Step 4: Simplify right side
    101,749.72x = 12,036,592,787.58
  5. Step 5: Solve for x
    x = 12,036,592,787.58/101,749.72
  6. Step 6: Final answer
    x = 118,296.08

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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.