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Finding the Fourth Proportional to 112,130.65, 168,195.98 and 76,963.69

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Solution

The fourth proportional to 112,130.65, 168,195.98 and 76,963.69 is: 115,445.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,130.65 : 168,195.98 = 76,963.69 : x
  2. Step 2: Convert to fraction form
    112,130.65/168,195.98 = 76,963.69/x
  3. Step 3: Cross multiply
    112,130.65x = 168,195.98 × 76,963.69
  4. Step 4: Simplify right side
    112,130.65x = 12,944,983,263.97
  5. Step 5: Solve for x
    x = 12,944,983,263.97/112,130.65
  6. Step 6: Final answer
    x = 115,445.54

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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.