Home / 208,078.26-287,117.20-126,364.02

Finding the Fourth Proportional to 208,078.26, 287,117.20 and 126,364.02

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Solution

The fourth proportional to 208,078.26, 287,117.20 and 126,364.02 is: 174,363.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,078.26 : 287,117.20 = 126,364.02 : x
  2. Step 2: Convert to fraction form
    208,078.26/287,117.20 = 126,364.02/x
  3. Step 3: Cross multiply
    208,078.26x = 287,117.20 × 126,364.02
  4. Step 4: Simplify right side
    208,078.26x = 36,281,283,603.14
  5. Step 5: Solve for x
    x = 36,281,283,603.14/208,078.26
  6. Step 6: Final answer
    x = 174,363.64

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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.