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Finding the Fourth Proportional to 98,803.40, 148,205.10 and 82,400.90

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Solution

The fourth proportional to 98,803.40, 148,205.10 and 82,400.90 is: 123,601.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,803.40 : 148,205.10 = 82,400.90 : x
  2. Step 2: Convert to fraction form
    98,803.40/148,205.10 = 82,400.90/x
  3. Step 3: Cross multiply
    98,803.40x = 148,205.10 × 82,400.90
  4. Step 4: Simplify right side
    98,803.40x = 12,212,233,624.59
  5. Step 5: Solve for x
    x = 12,212,233,624.59/98,803.40
  6. Step 6: Final answer
    x = 123,601.35

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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.