Home / 156,309.12-215,627.94-102,586.68

Finding the Fourth Proportional to 156,309.12, 215,627.94 and 102,586.68

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Solution

The fourth proportional to 156,309.12, 215,627.94 and 102,586.68 is: 141,518.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,309.12 : 215,627.94 = 102,586.68 : x
  2. Step 2: Convert to fraction form
    156,309.12/215,627.94 = 102,586.68/x
  3. Step 3: Cross multiply
    156,309.12x = 215,627.94 × 102,586.68
  4. Step 4: Simplify right side
    156,309.12x = 22,120,554,479.84
  5. Step 5: Solve for x
    x = 22,120,554,479.84/156,309.12
  6. Step 6: Final answer
    x = 141,518.00

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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.