Home / 113,539.11-156,684.03-65,820.12

Finding the Fourth Proportional to 113,539.11, 156,684.03 and 65,820.12

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Solution

The fourth proportional to 113,539.11, 156,684.03 and 65,820.12 is: 90,831.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,539.11 : 156,684.03 = 65,820.12 : x
  2. Step 2: Convert to fraction form
    113,539.11/156,684.03 = 65,820.12/x
  3. Step 3: Cross multiply
    113,539.11x = 156,684.03 × 65,820.12
  4. Step 4: Simplify right side
    113,539.11x = 10,312,961,656.68
  5. Step 5: Solve for x
    x = 10,312,961,656.68/113,539.11
  6. Step 6: Final answer
    x = 90,831.80

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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.