Home / 208,203.02-287,321.09-112,709.72

Finding the Fourth Proportional to 208,203.02, 287,321.09 and 112,709.72

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Solution

The fourth proportional to 208,203.02, 287,321.09 and 112,709.72 is: 155,539.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,203.02 : 287,321.09 = 112,709.72 : x
  2. Step 2: Convert to fraction form
    208,203.02/287,321.09 = 112,709.72/x
  3. Step 3: Cross multiply
    208,203.02x = 287,321.09 × 112,709.72
  4. Step 4: Simplify right side
    208,203.02x = 32,383,877,603.84
  5. Step 5: Solve for x
    x = 32,383,877,603.84/208,203.02
  6. Step 6: Final answer
    x = 155,539.90

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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.