Home / 208,219.21-287,342.61-112,725.91

Finding the Fourth Proportional to 208,219.21, 287,342.61 and 112,725.91

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Solution

The fourth proportional to 208,219.21, 287,342.61 and 112,725.91 is: 155,561.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,219.21 : 287,342.61 = 112,725.91 : x
  2. Step 2: Convert to fraction form
    208,219.21/287,342.61 = 112,725.91/x
  3. Step 3: Cross multiply
    208,219.21x = 287,342.61 × 112,725.91
  4. Step 4: Simplify right side
    208,219.21x = 32,390,957,130.48
  5. Step 5: Solve for x
    x = 32,390,957,130.48/208,219.21
  6. Step 6: Final answer
    x = 155,561.81

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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.