Home / 156,232.71-215,585.73-87,309.45

Finding the Fourth Proportional to 156,232.71, 215,585.73 and 87,309.45

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Solution

The fourth proportional to 156,232.71, 215,585.73 and 87,309.45 is: 120,478.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,232.71 : 215,585.73 = 87,309.45 : x
  2. Step 2: Convert to fraction form
    156,232.71/215,585.73 = 87,309.45/x
  3. Step 3: Cross multiply
    156,232.71x = 215,585.73 × 87,309.45
  4. Step 4: Simplify right side
    156,232.71x = 18,822,671,514.15
  5. Step 5: Solve for x
    x = 18,822,671,514.15/156,232.71
  6. Step 6: Final answer
    x = 120,478.43

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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.