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Finding the Fourth Proportional to 112,422.40, 168,518.40 and 65,651.20

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Solution

The fourth proportional to 112,422.40, 168,518.40 and 65,651.20 is: 98,409.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,422.40 : 168,518.40 = 65,651.20 : x
  2. Step 2: Convert to fraction form
    112,422.40/168,518.40 = 65,651.20/x
  3. Step 3: Cross multiply
    112,422.40x = 168,518.40 × 65,651.20
  4. Step 4: Simplify right side
    112,422.40x = 11,063,435,182.08
  5. Step 5: Solve for x
    x = 11,063,435,182.08/112,422.40
  6. Step 6: Final answer
    x = 98,409.53

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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.