Home / 113,096.13-156,003.21-81,307.68

Finding the Fourth Proportional to 113,096.13, 156,003.21 and 81,307.68

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Solution

The fourth proportional to 113,096.13, 156,003.21 and 81,307.68 is: 112,154.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,096.13 : 156,003.21 = 81,307.68 : x
  2. Step 2: Convert to fraction form
    113,096.13/156,003.21 = 81,307.68/x
  3. Step 3: Cross multiply
    113,096.13x = 156,003.21 × 81,307.68
  4. Step 4: Simplify right side
    113,096.13x = 12,684,259,077.65
  5. Step 5: Solve for x
    x = 12,684,259,077.65/113,096.13
  6. Step 6: Final answer
    x = 112,154.67

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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.