Home / 156,986.34-216,645.26-85,370.55

Finding the Fourth Proportional to 156,986.34, 216,645.26 and 85,370.55

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Solution

The fourth proportional to 156,986.34, 216,645.26 and 85,370.55 is: 117,813.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,986.34 : 216,645.26 = 85,370.55 : x
  2. Step 2: Convert to fraction form
    156,986.34/216,645.26 = 85,370.55/x
  3. Step 3: Cross multiply
    156,986.34x = 216,645.26 × 85,370.55
  4. Step 4: Simplify right side
    156,986.34x = 18,495,124,574.24
  5. Step 5: Solve for x
    x = 18,495,124,574.24/156,986.34
  6. Step 6: Final answer
    x = 117,813.59

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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.