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Finding the Fourth Proportional to 162,185.70, 223,816.59 and 90,565.50

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Solution

The fourth proportional to 162,185.70, 223,816.59 and 90,565.50 is: 124,980.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,185.70 : 223,816.59 = 90,565.50 : x
  2. Step 2: Convert to fraction form
    162,185.70/223,816.59 = 90,565.50/x
  3. Step 3: Cross multiply
    162,185.70x = 223,816.59 × 90,565.50
  4. Step 4: Simplify right side
    162,185.70x = 20,270,061,381.65
  5. Step 5: Solve for x
    x = 20,270,061,381.65/162,185.70
  6. Step 6: Final answer
    x = 124,980.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.