Home / 120,207.08-165,833.64-72,433.28

Finding the Fourth Proportional to 120,207.08, 165,833.64 and 72,433.28

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Solution

The fourth proportional to 120,207.08, 165,833.64 and 72,433.28 is: 99,926.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,207.08 : 165,833.64 = 72,433.28 : x
  2. Step 2: Convert to fraction form
    120,207.08/165,833.64 = 72,433.28/x
  3. Step 3: Cross multiply
    120,207.08x = 165,833.64 × 72,433.28
  4. Step 4: Simplify right side
    120,207.08x = 12,011,873,650.37
  5. Step 5: Solve for x
    x = 12,011,873,650.37/120,207.08
  6. Step 6: Final answer
    x = 99,926.51

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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.