Home / 208,128.04-287,340.42-136,633.12

Finding the Fourth Proportional to 208,128.04, 287,340.42 and 136,633.12

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Solution

The fourth proportional to 208,128.04, 287,340.42 and 136,633.12 is: 188,634.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,128.04 : 287,340.42 = 136,633.12 : x
  2. Step 2: Convert to fraction form
    208,128.04/287,340.42 = 136,633.12/x
  3. Step 3: Cross multiply
    208,128.04x = 287,340.42 × 136,633.12
  4. Step 4: Simplify right side
    208,128.04x = 39,260,218,086.71
  5. Step 5: Solve for x
    x = 39,260,218,086.71/208,128.04
  6. Step 6: Final answer
    x = 188,634.93

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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.