Home / 120,127.05-165,783.92-66,411.02

Finding the Fourth Proportional to 120,127.05, 165,783.92 and 66,411.02

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Solution

The fourth proportional to 120,127.05, 165,783.92 and 66,411.02 is: 91,651.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,127.05 : 165,783.92 = 66,411.02 : x
  2. Step 2: Convert to fraction form
    120,127.05/165,783.92 = 66,411.02/x
  3. Step 3: Cross multiply
    120,127.05x = 165,783.92 × 66,411.02
  4. Step 4: Simplify right side
    120,127.05x = 11,009,879,309.20
  5. Step 5: Solve for x
    x = 11,009,879,309.20/120,127.05
  6. Step 6: Final answer
    x = 91,651.96

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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.