Home / 208,571.12-287,806.61-128,002.04

Finding the Fourth Proportional to 208,571.12, 287,806.61 and 128,002.04

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Solution

The fourth proportional to 208,571.12, 287,806.61 and 128,002.04 is: 176,629.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,571.12 : 287,806.61 = 128,002.04 : x
  2. Step 2: Convert to fraction form
    208,571.12/287,806.61 = 128,002.04/x
  3. Step 3: Cross multiply
    208,571.12x = 287,806.61 × 128,002.04
  4. Step 4: Simplify right side
    208,571.12x = 36,839,832,565.47
  5. Step 5: Solve for x
    x = 36,839,832,565.47/208,571.12
  6. Step 6: Final answer
    x = 176,629.60

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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.