Home / 113,742.70-156,972.28-66,012.10

Finding the Fourth Proportional to 113,742.70, 156,972.28 and 66,012.10

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Solution

The fourth proportional to 113,742.70, 156,972.28 and 66,012.10 is: 91,100.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,742.70 : 156,972.28 = 66,012.10 : x
  2. Step 2: Convert to fraction form
    113,742.70/156,972.28 = 66,012.10/x
  3. Step 3: Cross multiply
    113,742.70x = 156,972.28 × 66,012.10
  4. Step 4: Simplify right side
    113,742.70x = 10,362,069,844.59
  5. Step 5: Solve for x
    x = 10,362,069,844.59/113,742.70
  6. Step 6: Final answer
    x = 91,100.97

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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.