Home / 115,871.24-159,915.72-70,575.80

Finding the Fourth Proportional to 115,871.24, 159,915.72 and 70,575.80

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Solution

The fourth proportional to 115,871.24, 159,915.72 and 70,575.80 is: 97,402.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,871.24 : 159,915.72 = 70,575.80 : x
  2. Step 2: Convert to fraction form
    115,871.24/159,915.72 = 70,575.80/x
  3. Step 3: Cross multiply
    115,871.24x = 159,915.72 × 70,575.80
  4. Step 4: Simplify right side
    115,871.24x = 11,286,179,871.58
  5. Step 5: Solve for x
    x = 11,286,179,871.58/115,871.24
  6. Step 6: Final answer
    x = 97,402.77

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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.