Home / 156,630.21-216,147.59-85,009.60

Finding the Fourth Proportional to 156,630.21, 216,147.59 and 85,009.60

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Solution

The fourth proportional to 156,630.21, 216,147.59 and 85,009.60 is: 117,312.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,630.21 : 216,147.59 = 85,009.60 : x
  2. Step 2: Convert to fraction form
    156,630.21/216,147.59 = 85,009.60/x
  3. Step 3: Cross multiply
    156,630.21x = 216,147.59 × 85,009.60
  4. Step 4: Simplify right side
    156,630.21x = 18,374,620,330.79
  5. Step 5: Solve for x
    x = 18,374,620,330.79/156,630.21
  6. Step 6: Final answer
    x = 117,312.11

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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.