Home / 113,156.48-156,163.20-65,421.56

Finding the Fourth Proportional to 113,156.48, 156,163.20 and 65,421.56

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Solution

The fourth proportional to 113,156.48, 156,163.20 and 65,421.56 is: 90,285.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,156.48 : 156,163.20 = 65,421.56 : x
  2. Step 2: Convert to fraction form
    113,156.48/156,163.20 = 65,421.56/x
  3. Step 3: Cross multiply
    113,156.48x = 156,163.20 × 65,421.56
  4. Step 4: Simplify right side
    113,156.48x = 10,216,440,158.59
  5. Step 5: Solve for x
    x = 10,216,440,158.59/113,156.48
  6. Step 6: Final answer
    x = 90,285.95

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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.