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Finding the Fourth Proportional to 119,987.86, 165,582.26 and 65,540.06

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Solution

The fourth proportional to 119,987.86, 165,582.26 and 65,540.06 is: 90,444.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,987.86 : 165,582.26 = 65,540.06 : x
  2. Step 2: Convert to fraction form
    119,987.86/165,582.26 = 65,540.06/x
  3. Step 3: Cross multiply
    119,987.86x = 165,582.26 × 65,540.06
  4. Step 4: Simplify right side
    119,987.86x = 10,852,271,255.34
  5. Step 5: Solve for x
    x = 10,852,271,255.34/119,987.86
  6. Step 6: Final answer
    x = 90,444.74

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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.