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Finding the Fourth Proportional to 112,439.70, 168,465.15 and 53,147.70

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Solution

The fourth proportional to 112,439.70, 168,465.15 and 53,147.70 is: 79,629.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,439.70 : 168,465.15 = 53,147.70 : x
  2. Step 2: Convert to fraction form
    112,439.70/168,465.15 = 53,147.70/x
  3. Step 3: Cross multiply
    112,439.70x = 168,465.15 × 53,147.70
  4. Step 4: Simplify right side
    112,439.70x = 8,953,535,252.66
  5. Step 5: Solve for x
    x = 8,953,535,252.66/112,439.70
  6. Step 6: Final answer
    x = 79,629.66

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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.