Home / 156,809.39-216,397.25-85,189.50

Finding the Fourth Proportional to 156,809.39, 216,397.25 and 85,189.50

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Solution

The fourth proportional to 156,809.39, 216,397.25 and 85,189.50 is: 117,561.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,809.39 : 216,397.25 = 85,189.50 : x
  2. Step 2: Convert to fraction form
    156,809.39/216,397.25 = 85,189.50/x
  3. Step 3: Cross multiply
    156,809.39x = 216,397.25 × 85,189.50
  4. Step 4: Simplify right side
    156,809.39x = 18,434,773,528.88
  5. Step 5: Solve for x
    x = 18,434,773,528.88/156,809.39
  6. Step 6: Final answer
    x = 117,561.67

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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.