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Finding the Fourth Proportional to 86,455.32, 119,230.70 and 73,754.32

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Solution

The fourth proportional to 86,455.32, 119,230.70 and 73,754.32 is: 101,714.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,455.32 : 119,230.70 = 73,754.32 : x
  2. Step 2: Convert to fraction form
    86,455.32/119,230.70 = 73,754.32/x
  3. Step 3: Cross multiply
    86,455.32x = 119,230.70 × 73,754.32
  4. Step 4: Simplify right side
    86,455.32x = 8,793,779,201.62
  5. Step 5: Solve for x
    x = 8,793,779,201.62/86,455.32
  6. Step 6: Final answer
    x = 101,714.73

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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.