Home / 156,930,400.70-235,289,312.85-80,190,320.30

Finding the Fourth Proportional to 156,930,400.70, 235,289,312.85 and 80,190,320.30

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Solution

The fourth proportional to 156,930,400.70, 235,289,312.85 and 80,190,320.30 is: 120,231,167.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,930,400.70 : 235,289,312.85 = 80,190,320.30 : x
  2. Step 2: Convert to fraction form
    156,930,400.70/235,289,312.85 = 80,190,320.30/x
  3. Step 3: Cross multiply
    156,930,400.70x = 235,289,312.85 × 80,190,320.30
  4. Step 4: Simplify right side
    156,930,400.70x = 18,867,925,360,608,404
  5. Step 5: Solve for x
    x = 18,867,925,360,608,404/156,930,400.70
  6. Step 6: Final answer
    x = 120,231,167.93

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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.