Home / 156,271.28-234,160.74-120,819.20

Finding the Fourth Proportional to 156,271.28, 234,160.74 and 120,819.20

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Solution

The fourth proportional to 156,271.28, 234,160.74 and 120,819.20 is: 181,038.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,271.28 : 234,160.74 = 120,819.20 : x
  2. Step 2: Convert to fraction form
    156,271.28/234,160.74 = 120,819.20/x
  3. Step 3: Cross multiply
    156,271.28x = 234,160.74 × 120,819.20
  4. Step 4: Simplify right side
    156,271.28x = 28,291,112,107.40
  5. Step 5: Solve for x
    x = 28,291,112,107.40/156,271.28
  6. Step 6: Final answer
    x = 181,038.47

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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.