Home / 120,127.66-165,788.27-66,416.76

Finding the Fourth Proportional to 120,127.66, 165,788.27 and 66,416.76

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Solution

The fourth proportional to 120,127.66, 165,788.27 and 66,416.76 is: 91,661.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,127.66 : 165,788.27 = 66,416.76 : x
  2. Step 2: Convert to fraction form
    120,127.66/165,788.27 = 66,416.76/x
  3. Step 3: Cross multiply
    120,127.66x = 165,788.27 × 66,416.76
  4. Step 4: Simplify right side
    120,127.66x = 11,011,119,656.38
  5. Step 5: Solve for x
    x = 11,011,119,656.38/120,127.66
  6. Step 6: Final answer
    x = 91,661.82

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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.