Home / 120,143.10-180,267.39-57,008.86

Finding the Fourth Proportional to 120,143.10, 180,267.39 and 57,008.86

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Solution

The fourth proportional to 120,143.10, 180,267.39 and 57,008.86 is: 85,538.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,143.10 : 180,267.39 = 57,008.86 : x
  2. Step 2: Convert to fraction form
    120,143.10/180,267.39 = 57,008.86/x
  3. Step 3: Cross multiply
    120,143.10x = 180,267.39 × 57,008.86
  4. Step 4: Simplify right side
    120,143.10x = 10,276,838,399.08
  5. Step 5: Solve for x
    x = 10,276,838,399.08/120,143.10
  6. Step 6: Final answer
    x = 85,538.32

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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.