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Finding the Fourth Proportional to 455,985.36, 684,012.42 and 136,111.97

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Solution

The fourth proportional to 455,985.36, 684,012.42 and 136,111.97 is: 204,178.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,985.36 : 684,012.42 = 136,111.97 : x
  2. Step 2: Convert to fraction form
    455,985.36/684,012.42 = 136,111.97/x
  3. Step 3: Cross multiply
    455,985.36x = 684,012.42 × 136,111.97
  4. Step 4: Simplify right side
    455,985.36x = 93,102,274,570.61
  5. Step 5: Solve for x
    x = 93,102,274,570.61/455,985.36
  6. Step 6: Final answer
    x = 204,178.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.