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Finding the Fourth Proportional to 112,461.91, 168,048.19 and 85,659.01

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Solution

The fourth proportional to 112,461.91, 168,048.19 and 85,659.01 is: 127,997.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,461.91 : 168,048.19 = 85,659.01 : x
  2. Step 2: Convert to fraction form
    112,461.91/168,048.19 = 85,659.01/x
  3. Step 3: Cross multiply
    112,461.91x = 168,048.19 × 85,659.01
  4. Step 4: Simplify right side
    112,461.91x = 14,394,841,587.69
  5. Step 5: Solve for x
    x = 14,394,841,587.69/112,461.91
  6. Step 6: Final answer
    x = 127,997.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.