Home / 208,621.30-287,899.19-113,128.00

Finding the Fourth Proportional to 208,621.30, 287,899.19 and 113,128.00

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Solution

The fourth proportional to 208,621.30, 287,899.19 and 113,128.00 is: 156,117.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,621.30 : 287,899.19 = 113,128.00 : x
  2. Step 2: Convert to fraction form
    208,621.30/287,899.19 = 113,128.00/x
  3. Step 3: Cross multiply
    208,621.30x = 287,899.19 × 113,128.00
  4. Step 4: Simplify right side
    208,621.30x = 32,569,459,129.39
  5. Step 5: Solve for x
    x = 32,569,459,129.39/208,621.30
  6. Step 6: Final answer
    x = 156,117.61

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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.