Home / 92,217.40-138,455.70-72,518.20

Finding the Fourth Proportional to 92,217.40, 138,455.70 and 72,518.20

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Solution

The fourth proportional to 92,217.40, 138,455.70 and 72,518.20 is: 108,879.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,217.40 : 138,455.70 = 72,518.20 : x
  2. Step 2: Convert to fraction form
    92,217.40/138,455.70 = 72,518.20/x
  3. Step 3: Cross multiply
    92,217.40x = 138,455.70 × 72,518.20
  4. Step 4: Simplify right side
    92,217.40x = 10,040,558,143.74
  5. Step 5: Solve for x
    x = 10,040,558,143.74/92,217.40
  6. Step 6: Final answer
    x = 108,879.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.