Home / 156,835.29-216,432.35-85,215.60

Finding the Fourth Proportional to 156,835.29, 216,432.35 and 85,215.60

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Solution

The fourth proportional to 156,835.29, 216,432.35 and 85,215.60 is: 117,597.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,835.29 : 216,432.35 = 85,215.60 : x
  2. Step 2: Convert to fraction form
    156,835.29/216,432.35 = 85,215.60/x
  3. Step 3: Cross multiply
    156,835.29x = 216,432.35 × 85,215.60
  4. Step 4: Simplify right side
    156,835.29x = 18,443,412,138.58
  5. Step 5: Solve for x
    x = 18,443,412,138.58/156,835.29
  6. Step 6: Final answer
    x = 117,597.34

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1.5x scale

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.