Home / 207,981.16-287,013.97-112,487.83

Finding the Fourth Proportional to 207,981.16, 287,013.97 and 112,487.83

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Solution

The fourth proportional to 207,981.16, 287,013.97 and 112,487.83 is: 155,233.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,981.16 : 287,013.97 = 112,487.83 : x
  2. Step 2: Convert to fraction form
    207,981.16/287,013.97 = 112,487.83/x
  3. Step 3: Cross multiply
    207,981.16x = 287,013.97 × 112,487.83
  4. Step 4: Simplify right side
    207,981.16x = 32,285,578,664.99
  5. Step 5: Solve for x
    x = 32,285,578,664.99/207,981.16
  6. Step 6: Final answer
    x = 155,233.19

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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.