Home / 156,120.92-215,457.27-88,113.74

Finding the Fourth Proportional to 156,120.92, 215,457.27 and 88,113.74

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Solution

The fourth proportional to 156,120.92, 215,457.27 and 88,113.74 is: 121,602.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,120.92 : 215,457.27 = 88,113.74 : x
  2. Step 2: Convert to fraction form
    156,120.92/215,457.27 = 88,113.74/x
  3. Step 3: Cross multiply
    156,120.92x = 215,457.27 × 88,113.74
  4. Step 4: Simplify right side
    156,120.92x = 18,984,745,869.89
  5. Step 5: Solve for x
    x = 18,984,745,869.89/156,120.92
  6. Step 6: Final answer
    x = 121,602.83

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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.