Home / 113,417.36-156,253.92-81,531.12

Finding the Fourth Proportional to 113,417.36, 156,253.92 and 81,531.12

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Solution

The fourth proportional to 113,417.36, 156,253.92 and 81,531.12 is: 112,324.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,417.36 : 156,253.92 = 81,531.12 : x
  2. Step 2: Convert to fraction form
    113,417.36/156,253.92 = 81,531.12/x
  3. Step 3: Cross multiply
    113,417.36x = 156,253.92 × 81,531.12
  4. Step 4: Simplify right side
    113,417.36x = 12,739,557,101.99
  5. Step 5: Solve for x
    x = 12,739,557,101.99/113,417.36
  6. Step 6: Final answer
    x = 112,324.58

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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.