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Finding the Fourth Proportional to 119,889.48, 165,444.96 and 65,439.86

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Solution

The fourth proportional to 119,889.48, 165,444.96 and 65,439.86 is: 90,305.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,889.48 : 165,444.96 = 65,439.86 : x
  2. Step 2: Convert to fraction form
    119,889.48/165,444.96 = 65,439.86/x
  3. Step 3: Cross multiply
    119,889.48x = 165,444.96 × 65,439.86
  4. Step 4: Simplify right side
    119,889.48x = 10,826,694,192.88
  5. Step 5: Solve for x
    x = 10,826,694,192.88/119,889.48
  6. Step 6: Final answer
    x = 90,305.62

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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.