Home / 115,342.72-159,083.40-72,885.76

Finding the Fourth Proportional to 115,342.72, 159,083.40 and 72,885.76

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Solution

The fourth proportional to 115,342.72, 159,083.40 and 72,885.76 is: 100,525.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,342.72 : 159,083.40 = 72,885.76 : x
  2. Step 2: Convert to fraction form
    115,342.72/159,083.40 = 72,885.76/x
  3. Step 3: Cross multiply
    115,342.72x = 159,083.40 × 72,885.76
  4. Step 4: Simplify right side
    115,342.72x = 11,594,914,512.38
  5. Step 5: Solve for x
    x = 11,594,914,512.38/115,342.72
  6. Step 6: Final answer
    x = 100,525.76

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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.