Home / 102,609.60-153,914.48-81,964.32

Finding the Fourth Proportional to 102,609.60, 153,914.48 and 81,964.32

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Solution

The fourth proportional to 102,609.60, 153,914.48 and 81,964.32 is: 122,946.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,609.60 : 153,914.48 = 81,964.32 : x
  2. Step 2: Convert to fraction form
    102,609.60/153,914.48 = 81,964.32/x
  3. Step 3: Cross multiply
    102,609.60x = 153,914.48 × 81,964.32
  4. Step 4: Simplify right side
    102,609.60x = 12,615,495,691.35
  5. Step 5: Solve for x
    x = 12,615,495,691.35/102,609.60
  6. Step 6: Final answer
    x = 122,946.54

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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.