Home / 120,432.21-180,641.29-36,190.59

Finding the Fourth Proportional to 120,432.21, 180,641.29 and 36,190.59

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Solution

The fourth proportional to 120,432.21, 180,641.29 and 36,190.59 is: 54,283.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,432.21 : 180,641.29 = 36,190.59 : x
  2. Step 2: Convert to fraction form
    120,432.21/180,641.29 = 36,190.59/x
  3. Step 3: Cross multiply
    120,432.21x = 180,641.29 × 36,190.59
  4. Step 4: Simplify right side
    120,432.21x = 6,537,514,863.46
  5. Step 5: Solve for x
    x = 6,537,514,863.46/120,432.21
  6. Step 6: Final answer
    x = 54,283.77

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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.