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Finding the Fourth Proportional to 108,604.70, 162,907.05 and 98,981.90

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Solution

The fourth proportional to 108,604.70, 162,907.05 and 98,981.90 is: 148,472.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,604.70 : 162,907.05 = 98,981.90 : x
  2. Step 2: Convert to fraction form
    108,604.70/162,907.05 = 98,981.90/x
  3. Step 3: Cross multiply
    108,604.70x = 162,907.05 × 98,981.90
  4. Step 4: Simplify right side
    108,604.70x = 16,124,849,332.40
  5. Step 5: Solve for x
    x = 16,124,849,332.40/108,604.70
  6. Step 6: Final answer
    x = 148,472.85

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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.