Home / 120,017.32-165,620.70-66,293.66

Finding the Fourth Proportional to 120,017.32, 165,620.70 and 66,293.66

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Solution

The fourth proportional to 120,017.32, 165,620.70 and 66,293.66 is: 91,483.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,017.32 : 165,620.70 = 66,293.66 : x
  2. Step 2: Convert to fraction form
    120,017.32/165,620.70 = 66,293.66/x
  3. Step 3: Cross multiply
    120,017.32x = 165,620.70 × 66,293.66
  4. Step 4: Simplify right side
    120,017.32x = 10,979,602,788.81
  5. Step 5: Solve for x
    x = 10,979,602,788.81/120,017.32
  6. Step 6: Final answer
    x = 91,483.49

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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.