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Finding the Fourth Proportional to 112,020, 154,588.08 and 61,717.92

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Solution

The fourth proportional to 112,020, 154,588.08 and 61,717.92 is: 85,170.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,020 : 154,588.08 = 61,717.92 : x
  2. Step 2: Convert to fraction form
    112,020/154,588.08 = 61,717.92/x
  3. Step 3: Cross multiply
    112,020x = 154,588.08 × 61,717.92
  4. Step 4: Simplify right side
    112,020x = 9,540,854,754.39
  5. Step 5: Solve for x
    x = 9,540,854,754.39/112,020
  6. Step 6: Final answer
    x = 85,170.99

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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.