Home / 208,543.11-287,688.02-123,600.03

Finding the Fourth Proportional to 208,543.11, 287,688.02 and 123,600.03

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Solution

The fourth proportional to 208,543.11, 287,688.02 and 123,600.03 is: 170,507.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,543.11 : 287,688.02 = 123,600.03 : x
  2. Step 2: Convert to fraction form
    208,543.11/287,688.02 = 123,600.03/x
  3. Step 3: Cross multiply
    208,543.11x = 287,688.02 × 123,600.03
  4. Step 4: Simplify right side
    208,543.11x = 35,558,247,284.64
  5. Step 5: Solve for x
    x = 35,558,247,284.64/208,543.11
  6. Step 6: Final answer
    x = 170,507.90

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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.