Home / 120,140.28-165,790.80-69,154.02

Finding the Fourth Proportional to 120,140.28, 165,790.80 and 69,154.02

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Solution

The fourth proportional to 120,140.28, 165,790.80 and 69,154.02 is: 95,430.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,140.28 : 165,790.80 = 69,154.02 : x
  2. Step 2: Convert to fraction form
    120,140.28/165,790.80 = 69,154.02/x
  3. Step 3: Cross multiply
    120,140.28x = 165,790.80 × 69,154.02
  4. Step 4: Simplify right side
    120,140.28x = 11,465,100,299.02
  5. Step 5: Solve for x
    x = 11,465,100,299.02/120,140.28
  6. Step 6: Final answer
    x = 95,430.94

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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.