Home / 120,256.86-165,953.40-71,856.16

Finding the Fourth Proportional to 120,256.86, 165,953.40 and 71,856.16

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Solution

The fourth proportional to 120,256.86, 165,953.40 and 71,856.16 is: 99,160.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,256.86 : 165,953.40 = 71,856.16 : x
  2. Step 2: Convert to fraction form
    120,256.86/165,953.40 = 71,856.16/x
  3. Step 3: Cross multiply
    120,256.86x = 165,953.40 × 71,856.16
  4. Step 4: Simplify right side
    120,256.86x = 11,924,772,873.90
  5. Step 5: Solve for x
    x = 11,924,772,873.90/120,256.86
  6. Step 6: Final answer
    x = 99,160.85

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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.