Home / 208,686.28-287,987.57-113,192.97

Finding the Fourth Proportional to 208,686.28, 287,987.57 and 113,192.97

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Solution

The fourth proportional to 208,686.28, 287,987.57 and 113,192.97 is: 156,206.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,686.28 : 287,987.57 = 113,192.97 : x
  2. Step 2: Convert to fraction form
    208,686.28/287,987.57 = 113,192.97/x
  3. Step 3: Cross multiply
    208,686.28x = 287,987.57 × 113,192.97
  4. Step 4: Simplify right side
    208,686.28x = 32,598,168,525.39
  5. Step 5: Solve for x
    x = 32,598,168,525.39/208,686.28
  6. Step 6: Final answer
    x = 156,206.57

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1.5x scale

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.