Home / 113,056.60-169,439.10-86,630.35

Finding the Fourth Proportional to 113,056.60, 169,439.10 and 86,630.35

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Solution

The fourth proportional to 113,056.60, 169,439.10 and 86,630.35 is: 129,833.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,056.60 : 169,439.10 = 86,630.35 : x
  2. Step 2: Convert to fraction form
    113,056.60/169,439.10 = 86,630.35/x
  3. Step 3: Cross multiply
    113,056.60x = 169,439.10 × 86,630.35
  4. Step 4: Simplify right side
    113,056.60x = 14,678,568,536.69
  5. Step 5: Solve for x
    x = 14,678,568,536.69/113,056.60
  6. Step 6: Final answer
    x = 129,833.80

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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.