Home / 113,438.15-169,859.94-79,977.05

Finding the Fourth Proportional to 113,438.15, 169,859.94 and 79,977.05

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Solution

The fourth proportional to 113,438.15, 169,859.94 and 79,977.05 is: 119,755.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,438.15 : 169,859.94 = 79,977.05 : x
  2. Step 2: Convert to fraction form
    113,438.15/169,859.94 = 79,977.05/x
  3. Step 3: Cross multiply
    113,438.15x = 169,859.94 × 79,977.05
  4. Step 4: Simplify right side
    113,438.15x = 13,584,896,065.08
  5. Step 5: Solve for x
    x = 13,584,896,065.08/113,438.15
  6. Step 6: Final answer
    x = 119,755.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.