Home / 156,035.09-215,326.31-87,125.63

Finding the Fourth Proportional to 156,035.09, 215,326.31 and 87,125.63

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Solution

The fourth proportional to 156,035.09, 215,326.31 and 87,125.63 is: 120,232.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,035.09 : 215,326.31 = 87,125.63 : x
  2. Step 2: Convert to fraction form
    156,035.09/215,326.31 = 87,125.63/x
  3. Step 3: Cross multiply
    156,035.09x = 215,326.31 × 87,125.63
  4. Step 4: Simplify right side
    156,035.09x = 18,760,438,902.07
  5. Step 5: Solve for x
    x = 18,760,438,902.07/156,035.09
  6. Step 6: Final answer
    x = 120,232.18

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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.