Home / 115,910.90-173,640.76-85,460.57

Finding the Fourth Proportional to 115,910.90, 173,640.76 and 85,460.57

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Solution

The fourth proportional to 115,910.90, 173,640.76 and 85,460.57 is: 128,024.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,910.90 : 173,640.76 = 85,460.57 : x
  2. Step 2: Convert to fraction form
    115,910.90/173,640.76 = 85,460.57/x
  3. Step 3: Cross multiply
    115,910.90x = 173,640.76 × 85,460.57
  4. Step 4: Simplify right side
    115,910.90x = 14,839,437,897.53
  5. Step 5: Solve for x
    x = 14,839,437,897.53/115,910.90
  6. Step 6: Final answer
    x = 128,024.52

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1.5x scale

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.