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Finding the Fourth Proportional to 112,391.80, 168,587.70 and 29,285.80

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Solution

The fourth proportional to 112,391.80, 168,587.70 and 29,285.80 is: 43,928.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,391.80 : 168,587.70 = 29,285.80 : x
  2. Step 2: Convert to fraction form
    112,391.80/168,587.70 = 29,285.80/x
  3. Step 3: Cross multiply
    112,391.80x = 168,587.70 × 29,285.80
  4. Step 4: Simplify right side
    112,391.80x = 4,937,225,664.66
  5. Step 5: Solve for x
    x = 4,937,225,664.66/112,391.80
  6. Step 6: Final answer
    x = 43,928.70

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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.