Home / 113,133.24-156,124.80-70,716.78

Finding the Fourth Proportional to 113,133.24, 156,124.80 and 70,716.78

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Solution

The fourth proportional to 113,133.24, 156,124.80 and 70,716.78 is: 97,589.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,133.24 : 156,124.80 = 70,716.78 : x
  2. Step 2: Convert to fraction form
    113,133.24/156,124.80 = 70,716.78/x
  3. Step 3: Cross multiply
    113,133.24x = 156,124.80 × 70,716.78
  4. Step 4: Simplify right side
    113,133.24x = 11,040,643,134.14
  5. Step 5: Solve for x
    x = 11,040,643,134.14/113,133.24
  6. Step 6: Final answer
    x = 97,589.74

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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.