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Finding the Fourth Proportional to 112,370.40, 168,490.80 and 42,256.80

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Solution

The fourth proportional to 112,370.40, 168,490.80 and 42,256.80 is: 63,360.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,370.40 : 168,490.80 = 42,256.80 : x
  2. Step 2: Convert to fraction form
    112,370.40/168,490.80 = 42,256.80/x
  3. Step 3: Cross multiply
    112,370.40x = 168,490.80 × 42,256.80
  4. Step 4: Simplify right side
    112,370.40x = 7,119,882,037.44
  5. Step 5: Solve for x
    x = 7,119,882,037.44/112,370.40
  6. Step 6: Final answer
    x = 63,360.83

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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.