Home / 115,742.88-159,671.23-74,920.18

Finding the Fourth Proportional to 115,742.88, 159,671.23 and 74,920.18

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Solution

The fourth proportional to 115,742.88, 159,671.23 and 74,920.18 is: 103,354.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,742.88 : 159,671.23 = 74,920.18 : x
  2. Step 2: Convert to fraction form
    115,742.88/159,671.23 = 74,920.18/x
  3. Step 3: Cross multiply
    115,742.88x = 159,671.23 × 74,920.18
  4. Step 4: Simplify right side
    115,742.88x = 11,962,597,817.55
  5. Step 5: Solve for x
    x = 11,962,597,817.55/115,742.88
  6. Step 6: Final answer
    x = 103,354.93

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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.