Home / 208,131.20-287,221.80-112,637.88

Finding the Fourth Proportional to 208,131.20, 287,221.80 and 112,637.88

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Solution

The fourth proportional to 208,131.20, 287,221.80 and 112,637.88 is: 155,440.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,131.20 : 287,221.80 = 112,637.88 : x
  2. Step 2: Convert to fraction form
    208,131.20/287,221.80 = 112,637.88/x
  3. Step 3: Cross multiply
    208,131.20x = 287,221.80 × 112,637.88
  4. Step 4: Simplify right side
    208,131.20x = 32,352,054,641.78
  5. Step 5: Solve for x
    x = 32,352,054,641.78/208,131.20
  6. Step 6: Final answer
    x = 155,440.68

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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.