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Finding the Fourth Proportional to 108,563,603.80, 162,845,405.70 and 87,040,243.30

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Solution

The fourth proportional to 108,563,603.80, 162,845,405.70 and 87,040,243.30 is: 130,560,364.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,563,603.80 : 162,845,405.70 = 87,040,243.30 : x
  2. Step 2: Convert to fraction form
    108,563,603.80/162,845,405.70 = 87,040,243.30/x
  3. Step 3: Cross multiply
    108,563,603.80x = 162,845,405.70 × 87,040,243.30
  4. Step 4: Simplify right side
    108,563,603.80x = 14,174,103,732,415,206
  5. Step 5: Solve for x
    x = 14,174,103,732,415,206/108,563,603.80
  6. Step 6: Final answer
    x = 130,560,364.95

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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.