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Finding the Fourth Proportional to 112,174.80, 168,035.40 and 69,925.20

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Solution

The fourth proportional to 112,174.80, 168,035.40 and 69,925.20 is: 104,746.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,174.80 : 168,035.40 = 69,925.20 : x
  2. Step 2: Convert to fraction form
    112,174.80/168,035.40 = 69,925.20/x
  3. Step 3: Cross multiply
    112,174.80x = 168,035.40 × 69,925.20
  4. Step 4: Simplify right side
    112,174.80x = 11,749,908,952.08
  5. Step 5: Solve for x
    x = 11,749,908,952.08/112,174.80
  6. Step 6: Final answer
    x = 104,746.42

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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.