Home / 156,833.06-216,432.80-85,217.72

Finding the Fourth Proportional to 156,833.06, 216,432.80 and 85,217.72

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Solution

The fourth proportional to 156,833.06, 216,432.80 and 85,217.72 is: 117,602.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,833.06 : 216,432.80 = 85,217.72 : x
  2. Step 2: Convert to fraction form
    156,833.06/216,432.80 = 85,217.72/x
  3. Step 3: Cross multiply
    156,833.06x = 216,432.80 × 85,217.72
  4. Step 4: Simplify right side
    156,833.06x = 18,443,909,749.22
  5. Step 5: Solve for x
    x = 18,443,909,749.22/156,833.06
  6. Step 6: Final answer
    x = 117,602.18

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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.