Home / 208,629.16-287,908.40-113,135.83

Finding the Fourth Proportional to 208,629.16, 287,908.40 and 113,135.83

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Solution

The fourth proportional to 208,629.16, 287,908.40 and 113,135.83 is: 156,127.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,629.16 : 287,908.40 = 113,135.83 : x
  2. Step 2: Convert to fraction form
    208,629.16/287,908.40 = 113,135.83/x
  3. Step 3: Cross multiply
    208,629.16x = 287,908.40 × 113,135.83
  4. Step 4: Simplify right side
    208,629.16x = 32,572,754,512.52
  5. Step 5: Solve for x
    x = 32,572,754,512.52/208,629.16
  6. Step 6: Final answer
    x = 156,127.53

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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.