Home / 156,909.58-216,536.67-85,289.77

Finding the Fourth Proportional to 156,909.58, 216,536.67 and 85,289.77

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Solution

The fourth proportional to 156,909.58, 216,536.67 and 85,289.77 is: 117,700.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,909.58 : 216,536.67 = 85,289.77 : x
  2. Step 2: Convert to fraction form
    156,909.58/216,536.67 = 85,289.77/x
  3. Step 3: Cross multiply
    156,909.58x = 216,536.67 × 85,289.77
  4. Step 4: Simplify right side
    156,909.58x = 18,468,362,780.87
  5. Step 5: Solve for x
    x = 18,468,362,780.87/156,909.58
  6. Step 6: Final answer
    x = 117,700.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.