Home / 109,360.80-150,921-61,611.48

Finding the Fourth Proportional to 109,360.80, 150,921 and 61,611.48

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Solution

The fourth proportional to 109,360.80, 150,921 and 61,611.48 is: 85,025.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,360.80 : 150,921 = 61,611.48 : x
  2. Step 2: Convert to fraction form
    109,360.80/150,921 = 61,611.48/x
  3. Step 3: Cross multiply
    109,360.80x = 150,921 × 61,611.48
  4. Step 4: Simplify right side
    109,360.80x = 9,298,466,173.08
  5. Step 5: Solve for x
    x = 9,298,466,173.08/109,360.80
  6. Step 6: Final answer
    x = 85,025.59

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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.