Home / 120,146.48-165,799.20-66,430.08

Finding the Fourth Proportional to 120,146.48, 165,799.20 and 66,430.08

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Solution

The fourth proportional to 120,146.48, 165,799.20 and 66,430.08 is: 91,671.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,146.48 : 165,799.20 = 66,430.08 : x
  2. Step 2: Convert to fraction form
    120,146.48/165,799.20 = 66,430.08/x
  3. Step 3: Cross multiply
    120,146.48x = 165,799.20 × 66,430.08
  4. Step 4: Simplify right side
    120,146.48x = 11,014,054,119.94
  5. Step 5: Solve for x
    x = 11,014,054,119.94/120,146.48
  6. Step 6: Final answer
    x = 91,671.88

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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.