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Finding the Fourth Proportional to 112,182.51, 154,809.39 and 61,881.51

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Solution

The fourth proportional to 112,182.51, 154,809.39 and 61,881.51 is: 85,395.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,182.51 : 154,809.39 = 61,881.51 : x
  2. Step 2: Convert to fraction form
    112,182.51/154,809.39 = 61,881.51/x
  3. Step 3: Cross multiply
    112,182.51x = 154,809.39 × 61,881.51
  4. Step 4: Simplify right side
    112,182.51x = 9,579,838,815.38
  5. Step 5: Solve for x
    x = 9,579,838,815.38/112,182.51
  6. Step 6: Final answer
    x = 85,395.12

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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.