Home / 156,312.05-215,709.21-88,327.80

Finding the Fourth Proportional to 156,312.05, 215,709.21 and 88,327.80

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Solution

The fourth proportional to 156,312.05, 215,709.21 and 88,327.80 is: 121,891.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,312.05 : 215,709.21 = 88,327.80 : x
  2. Step 2: Convert to fraction form
    156,312.05/215,709.21 = 88,327.80/x
  3. Step 3: Cross multiply
    156,312.05x = 215,709.21 × 88,327.80
  4. Step 4: Simplify right side
    156,312.05x = 19,053,119,959.04
  5. Step 5: Solve for x
    x = 19,053,119,959.04/156,312.05
  6. Step 6: Final answer
    x = 121,891.57

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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.