Home / 156,800.80-216,384.16-85,180.32

Finding the Fourth Proportional to 156,800.80, 216,384.16 and 85,180.32

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Solution

The fourth proportional to 156,800.80, 216,384.16 and 85,180.32 is: 117,548.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,800.80 : 216,384.16 = 85,180.32 : x
  2. Step 2: Convert to fraction form
    156,800.80/216,384.16 = 85,180.32/x
  3. Step 3: Cross multiply
    156,800.80x = 216,384.16 × 85,180.32
  4. Step 4: Simplify right side
    156,800.80x = 18,431,671,991.73
  5. Step 5: Solve for x
    x = 18,431,671,991.73/156,800.80
  6. Step 6: Final answer
    x = 117,548.33

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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.