Home / 165,420.72-228,279.96-89,970.48

Finding the Fourth Proportional to 165,420.72, 228,279.96 and 89,970.48

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Solution

The fourth proportional to 165,420.72, 228,279.96 and 89,970.48 is: 124,158.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,420.72 : 228,279.96 = 89,970.48 : x
  2. Step 2: Convert to fraction form
    165,420.72/228,279.96 = 89,970.48/x
  3. Step 3: Cross multiply
    165,420.72x = 228,279.96 × 89,970.48
  4. Step 4: Simplify right side
    165,420.72x = 20,538,457,575.58
  5. Step 5: Solve for x
    x = 20,538,457,575.58/165,420.72
  6. Step 6: Final answer
    x = 124,158.92

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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.