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Finding the Fourth Proportional to 207,605.25, 286,495.25 and 112,111.95

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Solution

The fourth proportional to 207,605.25, 286,495.25 and 112,111.95 is: 154,714.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,605.25 : 286,495.25 = 112,111.95 : x
  2. Step 2: Convert to fraction form
    207,605.25/286,495.25 = 112,111.95/x
  3. Step 3: Cross multiply
    207,605.25x = 286,495.25 × 112,111.95
  4. Step 4: Simplify right side
    207,605.25x = 32,119,541,423.52
  5. Step 5: Solve for x
    x = 32,119,541,423.52/207,605.25
  6. Step 6: Final answer
    x = 154,714.50

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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.