Home / 113,199.01-156,160.80-81,386.37

Finding the Fourth Proportional to 113,199.01, 156,160.80 and 81,386.37

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Solution

The fourth proportional to 113,199.01, 156,160.80 and 81,386.37 is: 112,274.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,199.01 : 156,160.80 = 81,386.37 : x
  2. Step 2: Convert to fraction form
    113,199.01/156,160.80 = 81,386.37/x
  3. Step 3: Cross multiply
    113,199.01x = 156,160.80 × 81,386.37
  4. Step 4: Simplify right side
    113,199.01x = 12,709,360,648.30
  5. Step 5: Solve for x
    x = 12,709,360,648.30/113,199.01
  6. Step 6: Final answer
    x = 112,274.49

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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.