Home / 118,149.12-162,953.64-75,711.60

Finding the Fourth Proportional to 118,149.12, 162,953.64 and 75,711.60

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Solution

The fourth proportional to 118,149.12, 162,953.64 and 75,711.60 is: 104,422.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,149.12 : 162,953.64 = 75,711.60 : x
  2. Step 2: Convert to fraction form
    118,149.12/162,953.64 = 75,711.60/x
  3. Step 3: Cross multiply
    118,149.12x = 162,953.64 × 75,711.60
  4. Step 4: Simplify right side
    118,149.12x = 12,337,480,810.22
  5. Step 5: Solve for x
    x = 12,337,480,810.22/118,149.12
  6. Step 6: Final answer
    x = 104,422.96

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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.