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Finding the Fourth Proportional to 145,260.61, 217,897.08 and 45,422.68

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Solution

The fourth proportional to 145,260.61, 217,897.08 and 45,422.68 is: 68,135.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,260.61 : 217,897.08 = 45,422.68 : x
  2. Step 2: Convert to fraction form
    145,260.61/217,897.08 = 45,422.68/x
  3. Step 3: Cross multiply
    145,260.61x = 217,897.08 × 45,422.68
  4. Step 4: Simplify right side
    145,260.61x = 9,897,469,337.77
  5. Step 5: Solve for x
    x = 9,897,469,337.77/145,260.61
  6. Step 6: Final answer
    x = 68,135.95

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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.