Home / 120,270.63-180,402.21-57,136.18

Finding the Fourth Proportional to 120,270.63, 180,402.21 and 57,136.18

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Solution

The fourth proportional to 120,270.63, 180,402.21 and 57,136.18 is: 85,702.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,270.63 : 180,402.21 = 57,136.18 : x
  2. Step 2: Convert to fraction form
    120,270.63/180,402.21 = 57,136.18/x
  3. Step 3: Cross multiply
    120,270.63x = 180,402.21 × 57,136.18
  4. Step 4: Simplify right side
    120,270.63x = 10,307,493,142.96
  5. Step 5: Solve for x
    x = 10,307,493,142.96/120,270.63
  6. Step 6: Final answer
    x = 85,702.50

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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.