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Finding the Fourth Proportional to 208,103.66, 287,112.76 and 135,473.39

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Solution

The fourth proportional to 208,103.66, 287,112.76 and 135,473.39 is: 186,907.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,103.66 : 287,112.76 = 135,473.39 : x
  2. Step 2: Convert to fraction form
    208,103.66/287,112.76 = 135,473.39/x
  3. Step 3: Cross multiply
    208,103.66x = 287,112.76 × 135,473.39
  4. Step 4: Simplify right side
    208,103.66x = 38,896,138,909.46
  5. Step 5: Solve for x
    x = 38,896,138,909.46/208,103.66
  6. Step 6: Final answer
    x = 186,907.52

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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.