Home / 207,981.16-287,013.78-112,487.63

Finding the Fourth Proportional to 207,981.16, 287,013.78 and 112,487.63

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Solution

The fourth proportional to 207,981.16, 287,013.78 and 112,487.63 is: 155,232.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,981.16 : 287,013.78 = 112,487.63 : x
  2. Step 2: Convert to fraction form
    207,981.16/287,013.78 = 112,487.63/x
  3. Step 3: Cross multiply
    207,981.16x = 287,013.78 × 112,487.63
  4. Step 4: Simplify right side
    207,981.16x = 32,285,498,454.47
  5. Step 5: Solve for x
    x = 32,285,498,454.47/207,981.16
  6. Step 6: Final answer
    x = 155,232.80

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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.