Home / 113,155.13-156,136.68-65,399.24

Finding the Fourth Proportional to 113,155.13, 156,136.68 and 65,399.24

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Solution

The fourth proportional to 113,155.13, 156,136.68 and 65,399.24 is: 90,240.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,155.13 : 156,136.68 = 65,399.24 : x
  2. Step 2: Convert to fraction form
    113,155.13/156,136.68 = 65,399.24/x
  3. Step 3: Cross multiply
    113,155.13x = 156,136.68 × 65,399.24
  4. Step 4: Simplify right side
    113,155.13x = 10,211,219,427.44
  5. Step 5: Solve for x
    x = 10,211,219,427.44/113,155.13
  6. Step 6: Final answer
    x = 90,240.89

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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.