Home / 208,432.90-287,637.66-112,939.58

Finding the Fourth Proportional to 208,432.90, 287,637.66 and 112,939.58

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Solution

The fourth proportional to 208,432.90, 287,637.66 and 112,939.58 is: 155,856.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,432.90 : 287,637.66 = 112,939.58 : x
  2. Step 2: Convert to fraction form
    208,432.90/287,637.66 = 112,939.58/x
  3. Step 3: Cross multiply
    208,432.90x = 287,637.66 × 112,939.58
  4. Step 4: Simplify right side
    208,432.90x = 32,485,676,512.58
  5. Step 5: Solve for x
    x = 32,485,676,512.58/208,432.90
  6. Step 6: Final answer
    x = 155,856.76

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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.