Home / 208,135.86-287,228.40-112,642.59

Finding the Fourth Proportional to 208,135.86, 287,228.40 and 112,642.59

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Solution

The fourth proportional to 208,135.86, 287,228.40 and 112,642.59 is: 155,447.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,135.86 : 287,228.40 = 112,642.59 : x
  2. Step 2: Convert to fraction form
    208,135.86/287,228.40 = 112,642.59/x
  3. Step 3: Cross multiply
    208,135.86x = 287,228.40 × 112,642.59
  4. Step 4: Simplify right side
    208,135.86x = 32,354,150,897.56
  5. Step 5: Solve for x
    x = 32,354,150,897.56/208,135.86
  6. Step 6: Final answer
    x = 155,447.27

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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.