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Finding the Fourth Proportional to 78,732,171.37, 118,098,257.05 and 78,732,171.37

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Solution

The fourth proportional to 78,732,171.37, 118,098,257.05 and 78,732,171.37 is: 118,098,257.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,171.37 : 118,098,257.05 = 78,732,171.37 : x
  2. Step 2: Convert to fraction form
    78,732,171.37/118,098,257.05 = 78,732,171.37/x
  3. Step 3: Cross multiply
    78,732,171.37x = 118,098,257.05 × 78,732,171.37
  4. Step 4: Simplify right side
    78,732,171.37x = 9,298,132,211,968,418
  5. Step 5: Solve for x
    x = 9,298,132,211,968,418/78,732,171.37
  6. Step 6: Final answer
    x = 118,098,257.05

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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.