Home / 156,930.30-216,561.26-85,312.13

Finding the Fourth Proportional to 156,930.30, 216,561.26 and 85,312.13

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Solution

The fourth proportional to 156,930.30, 216,561.26 and 85,312.13 is: 117,729.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,930.30 : 216,561.26 = 85,312.13 : x
  2. Step 2: Convert to fraction form
    156,930.30/216,561.26 = 85,312.13/x
  3. Step 3: Cross multiply
    156,930.30x = 216,561.26 × 85,312.13
  4. Step 4: Simplify right side
    156,930.30x = 18,475,300,856.72
  5. Step 5: Solve for x
    x = 18,475,300,856.72/156,930.30
  6. Step 6: Final answer
    x = 117,729.34

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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.