Home / 113,725.40-156,980.22-68,428.76

Finding the Fourth Proportional to 113,725.40, 156,980.22 and 68,428.76

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Solution

The fourth proportional to 113,725.40, 156,980.22 and 68,428.76 is: 94,455.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,725.40 : 156,980.22 = 68,428.76 : x
  2. Step 2: Convert to fraction form
    113,725.40/156,980.22 = 68,428.76/x
  3. Step 3: Cross multiply
    113,725.40x = 156,980.22 × 68,428.76
  4. Step 4: Simplify right side
    113,725.40x = 10,741,961,799.13
  5. Step 5: Solve for x
    x = 10,741,961,799.13/113,725.40
  6. Step 6: Final answer
    x = 94,455.26

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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.