Home / 120,142.10-180,239.02-35,909.12

Finding the Fourth Proportional to 120,142.10, 180,239.02 and 35,909.12

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Solution

The fourth proportional to 120,142.10, 180,239.02 and 35,909.12 is: 53,871.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,142.10 : 180,239.02 = 35,909.12 : x
  2. Step 2: Convert to fraction form
    120,142.10/180,239.02 = 35,909.12/x
  3. Step 3: Cross multiply
    120,142.10x = 180,239.02 × 35,909.12
  4. Step 4: Simplify right side
    120,142.10x = 6,472,224,958.69
  5. Step 5: Solve for x
    x = 6,472,224,958.69/120,142.10
  6. Step 6: Final answer
    x = 53,871.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.