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Finding the Fourth Proportional to 139,045.30, 208,567.95 and 133,602.10

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Solution

The fourth proportional to 139,045.30, 208,567.95 and 133,602.10 is: 200,403.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,045.30 : 208,567.95 = 133,602.10 : x
  2. Step 2: Convert to fraction form
    139,045.30/208,567.95 = 133,602.10/x
  3. Step 3: Cross multiply
    139,045.30x = 208,567.95 × 133,602.10
  4. Step 4: Simplify right side
    139,045.30x = 27,865,116,112.70
  5. Step 5: Solve for x
    x = 27,865,116,112.70/139,045.30
  6. Step 6: Final answer
    x = 200,403.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.