Home / 85,712.40-118,222.38-73,755.18

Finding the Fourth Proportional to 85,712.40, 118,222.38 and 73,755.18

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Solution

The fourth proportional to 85,712.40, 118,222.38 and 73,755.18 is: 101,729.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,712.40 : 118,222.38 = 73,755.18 : x
  2. Step 2: Convert to fraction form
    85,712.40/118,222.38 = 73,755.18/x
  3. Step 3: Cross multiply
    85,712.40x = 118,222.38 × 73,755.18
  4. Step 4: Simplify right side
    85,712.40x = 8,719,512,916.93
  5. Step 5: Solve for x
    x = 8,719,512,916.93/85,712.40
  6. Step 6: Final answer
    x = 101,729.89

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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.