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Finding the Fourth Proportional to 101,093.70, 151,421.85 and 65,664.30

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Solution

The fourth proportional to 101,093.70, 151,421.85 and 65,664.30 is: 98,354.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,093.70 : 151,421.85 = 65,664.30 : x
  2. Step 2: Convert to fraction form
    101,093.70/151,421.85 = 65,664.30/x
  3. Step 3: Cross multiply
    101,093.70x = 151,421.85 × 65,664.30
  4. Step 4: Simplify right side
    101,093.70x = 9,943,009,784.96
  5. Step 5: Solve for x
    x = 9,943,009,784.96/101,093.70
  6. Step 6: Final answer
    x = 98,354.40

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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.