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Finding the Fourth Proportional to 112,608.63, 155,394.77 and 64,868.85

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Solution

The fourth proportional to 112,608.63, 155,394.77 and 64,868.85 is: 89,516.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,608.63 : 155,394.77 = 64,868.85 : x
  2. Step 2: Convert to fraction form
    112,608.63/155,394.77 = 64,868.85/x
  3. Step 3: Cross multiply
    112,608.63x = 155,394.77 × 64,868.85
  4. Step 4: Simplify right side
    112,608.63x = 10,080,279,701.57
  5. Step 5: Solve for x
    x = 10,080,279,701.57/112,608.63
  6. Step 6: Final answer
    x = 89,516.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.