Home / 120,011.61-165,614.78-66,293.12

Finding the Fourth Proportional to 120,011.61, 165,614.78 and 66,293.12

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Solution

The fourth proportional to 120,011.61, 165,614.78 and 66,293.12 is: 91,483.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,011.61 : 165,614.78 = 66,293.12 : x
  2. Step 2: Convert to fraction form
    120,011.61/165,614.78 = 66,293.12/x
  3. Step 3: Cross multiply
    120,011.61x = 165,614.78 × 66,293.12
  4. Step 4: Simplify right side
    120,011.61x = 10,979,119,324.77
  5. Step 5: Solve for x
    x = 10,979,119,324.77/120,011.61
  6. Step 6: Final answer
    x = 91,483.81

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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.