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Finding the Fourth Proportional to 89,898.90, 134,815.95 and 45,510.90

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Solution

The fourth proportional to 89,898.90, 134,815.95 and 45,510.90 is: 68,249.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,898.90 : 134,815.95 = 45,510.90 : x
  2. Step 2: Convert to fraction form
    89,898.90/134,815.95 = 45,510.90/x
  3. Step 3: Cross multiply
    89,898.90x = 134,815.95 × 45,510.90
  4. Step 4: Simplify right side
    89,898.90x = 6,135,595,218.86
  5. Step 5: Solve for x
    x = 6,135,595,218.86/89,898.90
  6. Step 6: Final answer
    x = 68,249.95

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1.5x scale

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.