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Finding the Fourth Proportional to 161,800.70, 242,510.42 and 72,950.18

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Solution

The fourth proportional to 161,800.70, 242,510.42 and 72,950.18 is: 109,339.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,800.70 : 242,510.42 = 72,950.18 : x
  2. Step 2: Convert to fraction form
    161,800.70/242,510.42 = 72,950.18/x
  3. Step 3: Cross multiply
    161,800.70x = 242,510.42 × 72,950.18
  4. Step 4: Simplify right side
    161,800.70x = 17,691,177,760.70
  5. Step 5: Solve for x
    x = 17,691,177,760.70/161,800.70
  6. Step 6: Final answer
    x = 109,339.32

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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.