Home / 156,263.80-215,628.60-87,340.36

Finding the Fourth Proportional to 156,263.80, 215,628.60 and 87,340.36

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Solution

The fourth proportional to 156,263.80, 215,628.60 and 87,340.36 is: 120,521.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,263.80 : 215,628.60 = 87,340.36 : x
  2. Step 2: Convert to fraction form
    156,263.80/215,628.60 = 87,340.36/x
  3. Step 3: Cross multiply
    156,263.80x = 215,628.60 × 87,340.36
  4. Step 4: Simplify right side
    156,263.80x = 18,833,079,550.30
  5. Step 5: Solve for x
    x = 18,833,079,550.30/156,263.80
  6. Step 6: Final answer
    x = 120,521.06

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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.