Home / 156,930.36-216,561.34-85,312.19

Finding the Fourth Proportional to 156,930.36, 216,561.34 and 85,312.19

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Solution

The fourth proportional to 156,930.36, 216,561.34 and 85,312.19 is: 117,729.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,930.36 : 216,561.34 = 85,312.19 : x
  2. Step 2: Convert to fraction form
    156,930.36/216,561.34 = 85,312.19/x
  3. Step 3: Cross multiply
    156,930.36x = 216,561.34 × 85,312.19
  4. Step 4: Simplify right side
    156,930.36x = 18,475,322,184.73
  5. Step 5: Solve for x
    x = 18,475,322,184.73/156,930.36
  6. Step 6: Final answer
    x = 117,729.43

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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.