Home / 208,531.24-287,906.18-137,038.12

Finding the Fourth Proportional to 208,531.24, 287,906.18 and 137,038.12

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Solution

The fourth proportional to 208,531.24, 287,906.18 and 137,038.12 is: 189,200.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,531.24 : 287,906.18 = 137,038.12 : x
  2. Step 2: Convert to fraction form
    208,531.24/287,906.18 = 137,038.12/x
  3. Step 3: Cross multiply
    208,531.24x = 287,906.18 × 137,038.12
  4. Step 4: Simplify right side
    208,531.24x = 39,454,121,643.58
  5. Step 5: Solve for x
    x = 39,454,121,643.58/208,531.24
  6. Step 6: Final answer
    x = 189,200.05

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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.