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Finding the Fourth Proportional to 208,030.10, 312,045.15 and 124,049.30

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Solution

The fourth proportional to 208,030.10, 312,045.15 and 124,049.30 is: 186,073.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,030.10 : 312,045.15 = 124,049.30 : x
  2. Step 2: Convert to fraction form
    208,030.10/312,045.15 = 124,049.30/x
  3. Step 3: Cross multiply
    208,030.10x = 312,045.15 × 124,049.30
  4. Step 4: Simplify right side
    208,030.10x = 38,708,982,425.90
  5. Step 5: Solve for x
    x = 38,708,982,425.90/208,030.10
  6. Step 6: Final answer
    x = 186,073.95

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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.