Home / 156,178.80-215,438.76-98,800.32

Finding the Fourth Proportional to 156,178.80, 215,438.76 and 98,800.32

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Solution

The fourth proportional to 156,178.80, 215,438.76 and 98,800.32 is: 136,288.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,178.80 : 215,438.76 = 98,800.32 : x
  2. Step 2: Convert to fraction form
    156,178.80/215,438.76 = 98,800.32/x
  3. Step 3: Cross multiply
    156,178.80x = 215,438.76 × 98,800.32
  4. Step 4: Simplify right side
    156,178.80x = 21,285,418,428.40
  5. Step 5: Solve for x
    x = 21,285,418,428.40/156,178.80
  6. Step 6: Final answer
    x = 136,288.78

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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.