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Finding the Fourth Proportional to 208,124.04, 287,334.92 and 136,629.12

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Solution

The fourth proportional to 208,124.04, 287,334.92 and 136,629.12 is: 188,629.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,124.04 : 287,334.92 = 136,629.12 : x
  2. Step 2: Convert to fraction form
    208,124.04/287,334.92 = 136,629.12/x
  3. Step 3: Cross multiply
    208,124.04x = 287,334.92 × 136,629.12
  4. Step 4: Simplify right side
    208,124.04x = 39,258,317,264.87
  5. Step 5: Solve for x
    x = 39,258,317,264.87/208,124.04
  6. Step 6: Final answer
    x = 188,629.42

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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.