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Finding the Fourth Proportional to 113,609.60, 156,762.81 and 65,853.62

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Solution

The fourth proportional to 113,609.60, 156,762.81 and 65,853.62 is: 90,867.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,609.60 : 156,762.81 = 65,853.62 : x
  2. Step 2: Convert to fraction form
    113,609.60/156,762.81 = 65,853.62/x
  3. Step 3: Cross multiply
    113,609.60x = 156,762.81 × 65,853.62
  4. Step 4: Simplify right side
    113,609.60x = 10,323,398,519.87
  5. Step 5: Solve for x
    x = 10,323,398,519.87/113,609.60
  6. Step 6: Final answer
    x = 90,867.31

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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.