Home / 113,749.78-156,974.64-63,448.78

Finding the Fourth Proportional to 113,749.78, 156,974.64 and 63,448.78

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Solution

The fourth proportional to 113,749.78, 156,974.64 and 63,448.78 is: 87,559.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,749.78 : 156,974.64 = 63,448.78 : x
  2. Step 2: Convert to fraction form
    113,749.78/156,974.64 = 63,448.78/x
  3. Step 3: Cross multiply
    113,749.78x = 156,974.64 × 63,448.78
  4. Step 4: Simplify right side
    113,749.78x = 9,959,849,398.94
  5. Step 5: Solve for x
    x = 9,959,849,398.94/113,749.78
  6. Step 6: Final answer
    x = 87,559.28

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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.