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Finding the Fourth Proportional to 124,279.64, 171,447.27 and 84,007.46

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Solution

The fourth proportional to 124,279.64, 171,447.27 and 84,007.46 is: 115,890.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,279.64 : 171,447.27 = 84,007.46 : x
  2. Step 2: Convert to fraction form
    124,279.64/171,447.27 = 84,007.46/x
  3. Step 3: Cross multiply
    124,279.64x = 171,447.27 × 84,007.46
  4. Step 4: Simplify right side
    124,279.64x = 14,402,849,676.63
  5. Step 5: Solve for x
    x = 14,402,849,676.63/124,279.64
  6. Step 6: Final answer
    x = 115,890.66

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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.